Type Parameters:

T - component type

All Superinterfaces:

Foldable<T>, java.util.function.Function<java.lang.Integer,T>, Function1<java.lang.Integer,T>, Iterable<T>, java.lang.Iterable<T>, PartialFunction<java.lang.Integer,T>, Seq<T>, java.io.Serializable, Traversable<T>, Value<T>

All Known Implementing Classes:

Array, CharSeq, Vector
```
public interface IndexedSeq<T>
extends Seq<T>
```
Interface for immutable, indexed sequences.
Efficient random access is characteristic for indexed sequences.

Field Summary

Fields
Modifier and Type Field Description

static long serialVersionUID

Method Summary

Modifier and Type	Method	Description
`IndexedSeq<T>`	`append(T element)`	Appends an element to this.
`IndexedSeq<T>`	`appendAll(java.lang.Iterable<? extends T> elements)`	Appends all given elements to this.
`IndexedSeq<T>`	`asJava(java.util.function.Consumer<? super java.util.List<T>> action)`	Creates an immutable `List` view on top of this `Seq` that is passed to the given `action`.
`IndexedSeq<T>`	`asJavaMutable(java.util.function.Consumer<? super java.util.List<T>> action)`	Creates a mutable `List` view on top of this `Seq` that is passed to the given `action`.
`default PartialFunction<java.lang.Integer,T>`	`asPartialFunction()`	Turns this `Seq` into a `PartialFunction` which is defined at a specific index, if this `Seq` contains at least index + 1 elements.
`<R> IndexedSeq<R>`	`collect(PartialFunction<? super T,? extends R> partialFunction)`	Collects all elements that are in the domain of the given `partialFunction` by mapping the elements to type `R`.
`IndexedSeq<? extends IndexedSeq<T>>`	`combinations()`	Returns the union of all combinations from k = 0 to length().
`IndexedSeq<? extends IndexedSeq<T>>`	`combinations(int k)`	Returns the k-combination of this traversable, i.e.
`Iterator<? extends IndexedSeq<T>>`	`crossProduct(int power)`	Calculates the n-ary cartesian power (or cross product or simply product) of this.
`IndexedSeq<T>`	`distinct()`	Returns a new version of this which contains no duplicates.
`IndexedSeq<T>`	`distinctBy(java.util.Comparator<? super T> comparator)`	Returns a new version of this which contains no duplicates.
`<U> IndexedSeq<T>`	`distinctBy(java.util.function.Function<? super T,? extends U> keyExtractor)`	Returns a new version of this which contains no duplicates.
`IndexedSeq<T>`	`drop(int n)`	Drops the first n elements of this or all elements, if this length < n.
`IndexedSeq<T>`	`dropRight(int n)`	Drops the last n elements of this or all elements, if this length < n.
`IndexedSeq<T>`	`dropRightUntil(java.util.function.Predicate<? super T> predicate)`	Drops elements until the predicate holds for the current element, starting from the end.
`IndexedSeq<T>`	`dropRightWhile(java.util.function.Predicate<? super T> predicate)`	Drops elements while the predicate holds for the current element, starting from the end.
`IndexedSeq<T>`	`dropUntil(java.util.function.Predicate<? super T> predicate)`	Drops elements until the predicate holds for the current element.
`IndexedSeq<T>`	`dropWhile(java.util.function.Predicate<? super T> predicate)`	Drops elements while the predicate holds for the current element.
`default boolean`	`endsWith(Seq<? extends T> that)`	Tests whether this sequence ends with the given sequence.
`IndexedSeq<T>`	`filter(java.util.function.Predicate<? super T> predicate)`	Returns a new traversable consisting of all elements which satisfy the given predicate.
`IndexedSeq<T>`	`filterNot(java.util.function.Predicate<? super T> predicate)`	Returns a new traversable consisting of all elements which do not satisfy the given predicate.
`<U> IndexedSeq<U>`	`flatMap(java.util.function.Function<? super T,? extends java.lang.Iterable<? extends U>> mapper)`	FlatMaps this Traversable.
`<C> Map<C,? extends IndexedSeq<T>>`	`groupBy(java.util.function.Function<? super T,? extends C> classifier)`	Groups this elements by classifying the elements.
`Iterator<? extends IndexedSeq<T>>`	`grouped(int size)`	Groups this `Traversable` into fixed size blocks.
`default int`	`indexOfSlice(java.lang.Iterable<? extends T> that, int from)`	Finds first index after or at a start index where this sequence contains a given sequence as a slice.
`default int`	`indexWhere(java.util.function.Predicate<? super T> predicate, int from)`	Finds index of the first element satisfying some predicate after or at some start index.
`IndexedSeq<T>`	`init()`	Dual of Traversable.tail(), returning all elements except the last.
`Option<? extends IndexedSeq<T>>`	`initOption()`	Dual of Traversable.tailOption(), returning all elements except the last as `Option`.
`IndexedSeq<T>`	`insert(int index, T element)`	Inserts the given element at the specified index.
`IndexedSeq<T>`	`insertAll(int index, java.lang.Iterable<? extends T> elements)`	Inserts the given elements at the specified index.
`IndexedSeq<T>`	`intersperse(T element)`	Inserts an element between all elements of this Traversable.
`default boolean`	`isDefinedAt(java.lang.Integer index)`	Deprecated.
`default T`	`last()`	Dual of Traversable.head(), returning the last element.
`default int`	`lastIndexOfSlice(java.lang.Iterable<? extends T> that, int end)`	Finds last index before or at a given end index where this sequence contains a given sequence as a slice.
`default int`	`lastIndexWhere(java.util.function.Predicate<? super T> predicate, int end)`	Finds index of last element satisfying some predicate before or at given end index.
`<U> IndexedSeq<U>`	`map(java.util.function.Function<? super T,? extends U> mapper)`	Maps the elements of this `Traversable` to elements of a new type preserving their order, if any.
`static <T> IndexedSeq<T>`	`narrow(IndexedSeq<? extends T> indexedSeq)`	Narrows a widened `IndexedSeq<? extends T>` to `IndexedSeq<T>` by performing a type-safe cast.
`IndexedSeq<T>`	`orElse(java.lang.Iterable<? extends T> other)`	Returns this `Traversable` if it is nonempty, otherwise return the alternative.
`IndexedSeq<T>`	`orElse(java.util.function.Supplier<? extends java.lang.Iterable<? extends T>> supplier)`	Returns this `Traversable` if it is nonempty, otherwise return the result of evaluating supplier.
`IndexedSeq<T>`	`padTo(int length, T element)`	A copy of this sequence with an element appended until a given target length is reached.
`Tuple2<? extends IndexedSeq<T>,? extends IndexedSeq<T>>`	`partition(java.util.function.Predicate<? super T> predicate)`	Creates a partition of this `Traversable` by splitting this elements in two in distinct traversables according to a predicate.
`IndexedSeq<T>`	`patch(int from, java.lang.Iterable<? extends T> that, int replaced)`	Produces a new list where a slice of elements in this list is replaced by another sequence.
`IndexedSeq<T>`	`peek(java.util.function.Consumer<? super T> action)`	Performs the given `action` on the first element if this is an eager implementation.
`IndexedSeq<? extends IndexedSeq<T>>`	`permutations()`	Computes all unique permutations.
`IndexedSeq<T>`	`prepend(T element)`	Prepends an element to this.
`IndexedSeq<T>`	`prependAll(java.lang.Iterable<? extends T> elements)`	Prepends all given elements to this.
`IndexedSeq<T>`	`reject(java.util.function.Predicate<? super T> predicate)`	Deprecated.
`IndexedSeq<T>`	`remove(T element)`	Removes the first occurrence of the given element.
`IndexedSeq<T>`	`removeAll(java.lang.Iterable<? extends T> elements)`	Removes all occurrences of the given elements.
`IndexedSeq<T>`	`removeAll(java.util.function.Predicate<? super T> predicate)`	Deprecated.
`IndexedSeq<T>`	`removeAll(T element)`	Removes all occurrences of the given element.
`IndexedSeq<T>`	`removeAt(int index)`	Removes the element at the specified position in this sequence.
`IndexedSeq<T>`	`removeFirst(java.util.function.Predicate<T> predicate)`	Removes the first occurrence that satisfy predicate
`IndexedSeq<T>`	`removeLast(java.util.function.Predicate<T> predicate)`	Removes the last occurrence that satisfy predicate
`IndexedSeq<T>`	`replace(T currentElement, T newElement)`	Replaces the first occurrence (if exists) of the given currentElement with newElement.
`IndexedSeq<T>`	`replaceAll(T currentElement, T newElement)`	Replaces all occurrences of the given currentElement with newElement.
`IndexedSeq<T>`	`retainAll(java.lang.Iterable<? extends T> elements)`	Keeps all occurrences of the given elements from this.
`IndexedSeq<T>`	`reverse()`	Reverses the order of elements.
`default Iterator<T>`	`reverseIterator()`	An iterator yielding elements in reversed order.
`IndexedSeq<T>`	`rotateLeft(int n)`	Circular rotates the elements by the specified distance to the left direction.
`IndexedSeq<T>`	`rotateRight(int n)`	Circular rotates the elements by the specified distance to the right direction.
`IndexedSeq<T>`	`scan(T zero, java.util.function.BiFunction<? super T,? super T,? extends T> operation)`	Computes a prefix scan of the elements of the collection.
`<U> IndexedSeq<U>`	`scanLeft(U zero, java.util.function.BiFunction<? super U,? super T,? extends U> operation)`	Produces a collection containing cumulative results of applying the operator going left to right.
`<U> IndexedSeq<U>`	`scanRight(U zero, java.util.function.BiFunction<? super T,? super U,? extends U> operation)`	Produces a collection containing cumulative results of applying the operator going right to left.
`default int`	`search(T element)`	Searches this sequence for a specific element using a binary search.
`default int`	`search(T element, java.util.Comparator<? super T> comparator)`	Searches this sequence for a specific element using a binary search.
`default int`	`segmentLength(java.util.function.Predicate<? super T> predicate, int from)`	Computes length of longest segment whose elements all satisfy some predicate.
`IndexedSeq<T>`	`shuffle()`	Randomize the order of the elements in the current sequence.
`IndexedSeq<T>`	`shuffle(java.util.Random random)`	Randomize the order of the elements in the current sequence using the given source of randomness.
`IndexedSeq<T>`	`slice(int beginIndex, int endIndex)`	Returns a Seq that is a slice of this.
`Iterator<? extends IndexedSeq<T>>`	`slideBy(java.util.function.Function<? super T,?> classifier)`	Slides a non-overlapping window of a variable size over this `Traversable`.
`Iterator<? extends IndexedSeq<T>>`	`sliding(int size)`	Slides a window of a specific `size` and step size 1 over this `Traversable` by calling `Traversable.sliding(int, int)`.
`Iterator<? extends IndexedSeq<T>>`	`sliding(int size, int step)`	Slides a window of a specific `size` and `step` size over this `Traversable`.
`<U> IndexedSeq<T>`	`sortBy(java.util.Comparator<? super U> comparator, java.util.function.Function<? super T,? extends U> mapper)`	Sorts this elements by comparing the elements in a different domain, using the given `mapper`.
`<U extends java.lang.Comparable<? super U>> IndexedSeq<T>`	`sortBy(java.util.function.Function<? super T,? extends U> mapper)`	Sorts this elements by comparing the elements in a different domain, using the given `mapper`.
`IndexedSeq<T>`	`sorted()`	Sorts this elements according to their natural order.
`IndexedSeq<T>`	`sorted(java.util.Comparator<? super T> comparator)`	Sorts this elements according to the provided `Comparator`.
`Tuple2<? extends IndexedSeq<T>,? extends IndexedSeq<T>>`	`span(java.util.function.Predicate<? super T> predicate)`	Returns a tuple where the first element is the longest prefix of elements that satisfy the given `predicate` and the second element is the remainder.
`default boolean`	`startsWith(java.lang.Iterable<? extends T> that, int offset)`	Tests whether this list contains the given sequence at a given index.
`IndexedSeq<T>`	`subSequence(int beginIndex)`	Returns a Seq that is a subsequence of this.
`IndexedSeq<T>`	`subSequence(int beginIndex, int endIndex)`	Returns a Seq that is a subsequence of this.
`IndexedSeq<T>`	`tail()`	Drops the first element of a non-empty Traversable.
`Option<? extends IndexedSeq<T>>`	`tailOption()`	Drops the first element of a non-empty Traversable and returns an `Option`.
`IndexedSeq<T>`	`take(int n)`	Takes the first n elements of this or all elements, if this length < n.
`IndexedSeq<T>`	`takeRight(int n)`	Takes the last n elements of this or all elements, if this length < n.
`IndexedSeq<T>`	`takeRightUntil(java.util.function.Predicate<? super T> predicate)`	Takes elements until the predicate holds for the current element, starting from the end.
`IndexedSeq<T>`	`takeRightWhile(java.util.function.Predicate<? super T> predicate)`	Takes elements while the predicate holds for the current element, starting from the end.
`IndexedSeq<T>`	`takeUntil(java.util.function.Predicate<? super T> predicate)`	Takes elements until the predicate holds for the current element.
`IndexedSeq<T>`	`takeWhile(java.util.function.Predicate<? super T> predicate)`	Takes elements while the predicate holds for the current element.
`<T1,T2> Tuple2<? extends IndexedSeq<T1>,? extends IndexedSeq<T2>>`	`unzip(java.util.function.Function<? super T,Tuple2<? extends T1,? extends T2>> unzipper)`	Unzips this elements by mapping this elements to pairs which are subsequently split into two distinct sets.
`<T1,T2,T3> Tuple3<? extends IndexedSeq<T1>,? extends IndexedSeq<T2>,? extends IndexedSeq<T3>>`	`unzip3(java.util.function.Function<? super T,Tuple3<? extends T1,? extends T2,? extends T3>> unzipper)`	Unzips this elements by mapping this elements to triples which are subsequently split into three distinct sets.
`IndexedSeq<T>`	`update(int index, java.util.function.Function<? super T,? extends T> updater)`	Updates the given element at the specified index using the specified function.
`IndexedSeq<T>`	`update(int index, T element)`	Updates the given element at the specified index.
`<U> IndexedSeq<Tuple2<T,U>>`	`zip(java.lang.Iterable<? extends U> that)`	Returns a traversable formed from this traversable and another Iterable collection by combining corresponding elements in pairs.
`<U> IndexedSeq<Tuple2<T,U>>`	`zipAll(java.lang.Iterable<? extends U> that, T thisElem, U thatElem)`	Returns a traversable formed from this traversable and another Iterable by combining corresponding elements in pairs.
`<U,R> IndexedSeq<R>`	`zipWith(java.lang.Iterable<? extends U> that, java.util.function.BiFunction<? super T,? super U,? extends R> mapper)`	Returns a traversable formed from this traversable and another Iterable collection by mapping elements.
`IndexedSeq<Tuple2<T,java.lang.Integer>>`	`zipWithIndex()`	Zips this traversable with its indices.
`<U> IndexedSeq<U>`	`zipWithIndex(java.util.function.BiFunction<? super T,? super java.lang.Integer,? extends U> mapper)`	Returns a traversable formed from this traversable and another Iterable collection by mapping elements.

Methods inherited from interface io.vavr.Function1
andThen, arity, compose, curried, isMemoized, memoized, partial, reversed, tupled

Methods inherited from interface io.vavr.Iterable
to

Methods inherited from interface io.vavr.collection.Seq
apply, asJava, asJavaMutable, containsSlice, crossProduct, crossProduct, foldRight, get, indexOf, indexOf, indexOfOption, indexOfOption, indexOfSlice, indexOfSliceOption, indexOfSliceOption, indexWhere, indexWhereOption, indexWhereOption, isSequential, iterator, lastIndexOf, lastIndexOf, lastIndexOfOption, lastIndexOfOption, lastIndexOfSlice, lastIndexOfSliceOption, lastIndexOfSliceOption, lastIndexWhere, lastIndexWhereOption, lastIndexWhereOption, leftPadTo, lift, prefixLength, splitAt, splitAt, splitAtInclusive, startsWith, withDefault, withDefaultValue

Methods inherited from interface io.vavr.collection.Traversable
arrangeBy, average, containsAll, count, equals, existsUnique, find, findLast, fold, foldLeft, forEachWithIndex, get, hasDefiniteSize, hashCode, head, headOption, isDistinct, isEmpty, isOrdered, isSingleValued, isTraversableAgain, iterator, lastOption, length, max, maxBy, maxBy, min, minBy, minBy, mkCharSeq, mkCharSeq, mkCharSeq, mkString, mkString, mkString, nonEmpty, product, reduce, reduceLeft, reduceLeftOption, reduceOption, reduceRight, reduceRightOption, single, singleOption, size, spliterator, sum

Methods inherited from interface io.vavr.Value
collect, collect, contains, corresponds, eq, exists, forAll, forEach, getOrElse, getOrElse, getOrElseThrow, getOrElseTry, getOrNull, isAsync, isLazy, out, out, stderr, stdout, stringPrefix, toArray, toCharSeq, toCompletableFuture, toEither, toEither, toInvalid, toInvalid, toJavaArray, toJavaArray, toJavaArray, toJavaCollection, toJavaList, toJavaList, toJavaMap, toJavaMap, toJavaMap, toJavaOptional, toJavaParallelStream, toJavaSet, toJavaSet, toJavaStream, toLeft, toLeft, toLinkedMap, toLinkedMap, toLinkedSet, toList, toMap, toMap, toOption, toPriorityQueue, toPriorityQueue, toQueue, toRight, toRight, toSet, toSortedMap, toSortedMap, toSortedMap, toSortedMap, toSortedSet, toSortedSet, toStream, toString, toTree, toTree, toTry, toTry, toValid, toValid, toValidation, toValidation, toVector

- Field Detail
 - serialVersionUID
```
static final long serialVersionUID
```
 See Also:
 
 Constant Field Values
- Method Detail
 - narrow
```
static <T> IndexedSeq<T> narrow(IndexedSeq<? extends T> indexedSeq)
```
 Narrows a widened IndexedSeq<? extends T> to IndexedSeq<T> by performing a type-safe cast. This is eligible because immutable/read-only collections are covariant.
 
 Type Parameters:
 
 T - Component type of the IndexedSeq.
 
 Parameters:
 
 indexedSeq - An IndexedSeq.
 
 Returns:
 
 the given indexedSeq instance as narrowed type IndexedSeq<T>.
 - append
```
IndexedSeq<T> append(T element)
```
 Description copied from interface: Seq
 
 Appends an element to this.
 
 Specified by:
 
 append in interface Seq<T>
 
 Parameters:
 
 element - An element
 
 Returns:
 
 A new Seq containing the given element appended to this elements
 - appendAll
```
IndexedSeq<T> appendAll(java.lang.Iterable<? extends T> elements)
```
 Description copied from interface: Seq
 
 Appends all given elements to this.
 
 Specified by:
 
 appendAll in interface Seq<T>
 
 Parameters:
 
 elements - An Iterable of elements
 
 Returns:
 
 A new Seq containing the given elements appended to this elements
 - asJava
```
@GwtIncompatible
IndexedSeq<T> asJava(java.util.function.Consumer<? super java.util.List<T>> action)
```
 Description copied from interface: Seq
 
 Creates an immutable List view on top of this Seq that is passed to the given action.
 
 Specified by:
 
 asJava in interface Seq<T>
 
 Parameters:
 
 action - A side-effecting unit of work that operates on an immutable java.util.List view.
 
 Returns:
 
 this instance
 
 See Also:
 
 Seq.asJava()
 - asJavaMutable
```
@GwtIncompatible
IndexedSeq<T> asJavaMutable(java.util.function.Consumer<? super java.util.List<T>> action)
```
 Description copied from interface: Seq
 
 Creates a mutable List view on top of this Seq that is passed to the given action.
 
 Specified by:
 
 asJavaMutable in interface Seq<T>
 
 Parameters:
 
 action - A side-effecting unit of work that operates on a mutable java.util.List view.
 
 Returns:
 
 this instance, if only read operations are performed on the java.util.List view or a new instance of this type, if write operations are performed on the java.util.List view.
 
 See Also:
 
 Seq.asJavaMutable()
 - asPartialFunction
```
default PartialFunction<java.lang.Integer,T> asPartialFunction()
 throws java.lang.IndexOutOfBoundsException
```
 Description copied from interface: Seq
 
 Turns this Seq into a PartialFunction which is defined at a specific index, if this Seq contains at least index + 1 elements. When applied to a defined index, the partial function will return the value of this Seq at the specified index.
 
 Specified by:
 
 asPartialFunction in interface Seq<T>
 
 Returns:
 
 a new PartialFunction
 
 Throws:
 
 java.lang.IndexOutOfBoundsException - if this is empty, index < 0 or index >= length()
 - collect
```
<R> IndexedSeq<R> collect(PartialFunction<? super T,? extends R> partialFunction)
```
 Description copied from interface: Traversable
 Collects all elements that are in the domain of the given partialFunction by mapping the elements to type R.
 More specifically, for each of this elements in iteration order first it is checked
 partialFunction.isDefinedAt(element)
 If the elements makes it through that filter, the mapped instance is added to the result collection
 R newElement = partialFunction.apply(element)
 Note:If this Traversable is ordered (i.e. extends Ordered, the caller of collect has to ensure that the elements are comparable (i.e. extend Comparable).
 Specified by:
 
 collect in interface Seq<T>
 
 Specified by:
 
 collect in interface Traversable<T>
 
 Type Parameters:
 
 R - The new element type
 
 Parameters:
 
 partialFunction - A function that is not necessarily defined of all elements of this traversable.
 
 Returns:
 
 A new Traversable instance containing elements of type R
 - combinations
```
IndexedSeq<? extends IndexedSeq<T>> combinations()
```
 Description copied from interface: Seq
 Returns the union of all combinations from k = 0 to length().
 Examples:
 [].combinations() = [[]] [1,2,3].combinations() = [ [], // k = 0 [1], [2], [3], // k = 1 [1,2], [1,3], [2,3], // k = 2 [1,2,3] // k = 3 ]
 Specified by:
 
 combinations in interface Seq<T>
 
 Returns:
 
 the combinations of this
 - combinations
```
IndexedSeq<? extends IndexedSeq<T>> combinations(int k)
```
 Description copied from interface: Seq
 
 Returns the k-combination of this traversable, i.e. all subset of this of k distinct elements.
 
 Specified by:
 
 combinations in interface Seq<T>
 
 Parameters:
 
 k - Size of subsets
 
 Returns:
 
 the k-combination of this elements
 
 See Also:
 
 Combination
 - crossProduct
```
Iterator<? extends IndexedSeq<T>> crossProduct(int power)
```
 Description copied from interface: Seq
 Calculates the n-ary cartesian power (or cross product or simply product) of this.
 Example:
 // = ((A,A), (A,B), (A,C), ..., (B,A), (B,B), ..., (Z,Y), (Z,Z)) CharSeq.rangeClosed('A', 'Z').crossProduct(2);
 
 Cartesian power of negative value will return empty iterator.
 Example:
 // = () CharSeq.rangeClosed('A', 'Z').crossProduct(-1);
 Specified by:
 
 crossProduct in interface Seq<T>
 
 Parameters:
 
 power - the number of cartesian multiplications
 
 Returns:
 
 A new Iterator representing the n-ary cartesian power of this
 - distinct
```
IndexedSeq<T> distinct()
```
 Description copied from interface: Traversable
 
 Returns a new version of this which contains no duplicates. Elements are compared using equals.
 
 Specified by:
 
 distinct in interface Seq<T>
 
 Specified by:
 
 distinct in interface Traversable<T>
 
 Returns:
 
 a new Traversable containing this elements without duplicates
 - distinctBy
```
IndexedSeq<T> distinctBy(java.util.Comparator<? super T> comparator)
```
 Description copied from interface: Traversable
 
 Returns a new version of this which contains no duplicates. Elements are compared using the given comparator.
 
 Specified by:
 
 distinctBy in interface Seq<T>
 
 Specified by:
 
 distinctBy in interface Traversable<T>
 
 Parameters:
 
 comparator - A comparator
 
 Returns:
 
 a new Traversable containing this elements without duplicates
 - distinctBy
```
 IndexedSeq<T> distinctBy(java.util.function.Function<? super T,? extends U> keyExtractor)
```
 Description copied from interface: Traversable
 
 Returns a new version of this which contains no duplicates. Elements mapped to keys which are compared using equals.
 The elements of the result are determined in the order of their occurrence - first match wins.
 
 Specified by:
 
 distinctBy in interface Seq<T>
 
 Specified by:
 
 distinctBy in interface Traversable<T>
 
 Type Parameters:
 
 U - key type
 
 Parameters:
 
 keyExtractor - A key extractor
 
 Returns:
 
 a new Traversable containing this elements without duplicates
 - drop
```
IndexedSeq<T> drop(int n)
```
 Description copied from interface: Traversable
 
 Drops the first n elements of this or all elements, if this length < n.
 
 Specified by:
 
 drop in interface Seq<T>
 
 Specified by:
 
 drop in interface Traversable<T>
 
 Parameters:
 
 n - The number of elements to drop.
 
 Returns:
 
 a new instance consisting of all elements of this except the first n ones, or else the empty instance, if this has less than n elements.
 - dropUntil
```
IndexedSeq<T> dropUntil(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Traversable
 
 Drops elements until the predicate holds for the current element.
 
 Specified by:
 
 dropUntil in interface Seq<T>
 
 Specified by:
 
 dropUntil in interface Traversable<T>
 
 Parameters:
 
 predicate - A condition tested subsequently for this elements.
 
 Returns:
 
 a new instance consisting of all elements starting from the first one which does satisfy the given predicate.
 - dropWhile
```
IndexedSeq<T> dropWhile(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Traversable
 
 Drops elements while the predicate holds for the current element.
 Note: This is essentially the same as dropUntil(predicate.negate()). It is intended to be used with method references, which cannot be negated directly.
 
 Specified by:
 
 dropWhile in interface Seq<T>
 
 Specified by:
 
 dropWhile in interface Traversable<T>
 
 Parameters:
 
 predicate - A condition tested subsequently for this elements.
 
 Returns:
 
 a new instance consisting of all elements starting from the first one which does not satisfy the given predicate.
 - dropRight
```
IndexedSeq<T> dropRight(int n)
```
 Description copied from interface: Traversable
 
 Drops the last n elements of this or all elements, if this length < n.
 
 Specified by:
 
 dropRight in interface Seq<T>
 
 Specified by:
 
 dropRight in interface Traversable<T>
 
 Parameters:
 
 n - The number of elements to drop.
 
 Returns:
 
 a new instance consisting of all elements of this except the last n ones, or else the empty instance, if this has less than n elements.
 - dropRightUntil
```
IndexedSeq<T> dropRightUntil(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Seq
 
 Drops elements until the predicate holds for the current element, starting from the end.
 
 Specified by:
 
 dropRightUntil in interface Seq<T>
 
 Parameters:
 
 predicate - A condition tested subsequently for this elements, starting from the end.
 
 Returns:
 
 a new instance consisting of all elements until and including the last one which does satisfy the given predicate.
 - dropRightWhile
```
IndexedSeq<T> dropRightWhile(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Seq
 
 Drops elements while the predicate holds for the current element, starting from the end.
 Note: This is essentially the same as dropRightUntil(predicate.negate()). It is intended to be used with method references, which cannot be negated directly.
 
 Specified by:
 
 dropRightWhile in interface Seq<T>
 
 Parameters:
 
 predicate - A condition tested subsequently for this elements, starting from the end.
 
 Returns:
 
 a new instance consisting of all elements until and including the last one which does not satisfy the given predicate.
 - endsWith
```
default boolean endsWith(Seq<? extends T> that)
```
 Description copied from interface: Seq
 
 Tests whether this sequence ends with the given sequence.
 Note: If the both the receiver object this and the argument that are infinite sequences this method may not terminate.
 
 Specified by:
 
 endsWith in interface Seq<T>
 
 Parameters:
 
 that - the sequence to test
 
 Returns:
 
 true if this sequence has that as a suffix, false otherwise.
 - filter
```
IndexedSeq<T> filter(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Traversable
 
 Returns a new traversable consisting of all elements which satisfy the given predicate.
 
 Specified by:
 
 filter in interface Seq<T>
 
 Specified by:
 
 filter in interface Traversable<T>
 
 Parameters:
 
 predicate - A predicate
 
 Returns:
 
 a new traversable
 - filterNot
```
IndexedSeq<T> filterNot(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Traversable
 Returns a new traversable consisting of all elements which do not satisfy the given predicate.
 The default implementation is equivalent to
 filter(predicate.negate()
 Specified by:
 
 filterNot in interface Seq<T>
 
 Specified by:
 
 filterNot in interface Traversable<T>
 
 Parameters:
 
 predicate - A predicate
 
 Returns:
 
 a new traversable
 - reject
```
@Deprecated
IndexedSeq<T> reject(java.util.function.Predicate<? super T> predicate)
```
 Deprecated.
 
 Description copied from interface: Traversable
 Returns a new traversable consisting of all elements which do not satisfy the given predicate.
 The default implementation is equivalent to
 filter(predicate.negate()
 Specified by:
 
 reject in interface Seq<T>
 
 Specified by:
 
 reject in interface Traversable<T>
 
 Parameters:
 
 predicate - A predicate
 
 Returns:
 
 a new traversable
 - flatMap
```
 IndexedSeq flatMap(java.util.function.Function<? super T,? extends java.lang.Iterable<? extends U>> mapper)
```
 Description copied from interface: Traversable
 
 FlatMaps this Traversable.
 
 Specified by:
 
 flatMap in interface Seq<T>
 
 Specified by:
 
 flatMap in interface Traversable<T>
 
 Type Parameters:
 
 U - The resulting component type.
 
 Parameters:
 
 mapper - A mapper
 
 Returns:
 
 A new Traversable instance.
 - groupBy
```
<C> Map<C,? extends IndexedSeq<T>> groupBy(java.util.function.Function<? super T,? extends C> classifier)
```
 Description copied from interface: Traversable
 
 Groups this elements by classifying the elements.
 
 Specified by:
 
 groupBy in interface Seq<T>
 
 Specified by:
 
 groupBy in interface Traversable<T>
 
 Type Parameters:
 
 C - classified class type
 
 Parameters:
 
 classifier - A function which classifies elements into classes
 
 Returns:
 
 A Map containing the grouped elements
 
 See Also:
 
 Traversable.arrangeBy(Function)
 - indexWhere
```
default int indexWhere(java.util.function.Predicate<? super T> predicate,
 int from)
```
 Description copied from interface: Seq
 
 Finds index of the first element satisfying some predicate after or at some start index.
 
 Specified by:
 
 indexWhere in interface Seq<T>
 
 Parameters:
 
 predicate - the predicate used to test elements.
 
 from - the start index
 
 Returns:
 
 the index >= from of the first element of this Seq that satisfies the given predicate, or -1, if none exists.
 - grouped
```
Iterator<? extends IndexedSeq<T>> grouped(int size)
```
 Description copied from interface: Traversable
 Groups this Traversable into fixed size blocks.
 Let length be the length of this Iterable. Then grouped is defined as follows:
 
 If this.isEmpty(), the resulting Iterator is empty.
 
 If size <= length, the resulting Iterator will contain length / size blocks of size size and maybe a non-empty block of size length % size, if there are remaining elements.
 
 If size > length, the resulting Iterator will contain one block of size length.
 
 Examples:
 [].grouped(1) = [] [].grouped(0) throws [].grouped(-1) throws [1,2,3,4].grouped(2) = [[1,2],[3,4]] [1,2,3,4,5].grouped(2) = [[1,2],[3,4],[5]] [1,2,3,4].grouped(5) = [[1,2,3,4]]
 Please note that grouped(int) is a special case of Traversable.sliding(int, int), i.e. grouped(size) is the same as sliding(size, size).
 Specified by:
 
 grouped in interface Seq<T>
 
 Specified by:
 
 grouped in interface Traversable<T>
 
 Parameters:
 
 size - a positive block size
 
 Returns:
 
 A new Iterator of grouped blocks of the given size
 - indexOfSlice
```
default int indexOfSlice(java.lang.Iterable<? extends T> that,
 int from)
```
 Description copied from interface: Seq
 
 Finds first index after or at a start index where this sequence contains a given sequence as a slice. Note: may not terminate for infinite sequences.
 
 Specified by:
 
 indexOfSlice in interface Seq<T>
 
 Parameters:
 
 that - the sequence to test
 
 from - the start index
 
 Returns:
 
 the first index >= from such that the elements of this sequence starting at this index match the elements of sequence that, or -1 of no such slice exists.
 - init
```
IndexedSeq<T> init()
```
 Description copied from interface: Traversable
 
 Dual of Traversable.tail(), returning all elements except the last.
 
 Specified by:
 
 init in interface Seq<T>
 
 Specified by:
 
 init in interface Traversable<T>
 
 Returns:
 
 a new instance containing all elements except the last.
 - initOption
```
Option<? extends IndexedSeq<T>> initOption()
```
 Description copied from interface: Traversable
 
 Dual of Traversable.tailOption(), returning all elements except the last as Option.
 
 Specified by:
 
 initOption in interface Seq<T>
 
 Specified by:
 
 initOption in interface Traversable<T>
 
 Returns:
 
 Some(traversable) or None if this is empty.
 - insert
```
IndexedSeq<T> insert(int index,
 T element)
```
 Description copied from interface: Seq
 
 Inserts the given element at the specified index.
 
 Specified by:
 
 insert in interface Seq<T>
 
 Parameters:
 
 index - an index
 
 element - an element
 
 Returns:
 
 a new Seq, where the given element is inserted into this at the given index
 - insertAll
```
IndexedSeq<T> insertAll(int index,
 java.lang.Iterable<? extends T> elements)
```
 Description copied from interface: Seq
 
 Inserts the given elements at the specified index.
 
 Specified by:
 
 insertAll in interface Seq<T>
 
 Parameters:
 
 index - an index
 
 elements - An Iterable of elements
 
 Returns:
 
 a new Seq, where the given elements are inserted into this at the given index
 - intersperse
```
IndexedSeq<T> intersperse(T element)
```
 Description copied from interface: Seq
 
 Inserts an element between all elements of this Traversable.
 
 Specified by:
 
 intersperse in interface Seq<T>
 
 Parameters:
 
 element - An element.
 
 Returns:
 
 an interspersed version of this
 - isDefinedAt
```
@Deprecated
default boolean isDefinedAt(java.lang.Integer index)
```
 Deprecated.
 
 Description copied from interface: PartialFunction
 
 Tests if a value is contained in the function's domain.
 
 Specified by:
 
 isDefinedAt in interface PartialFunction<java.lang.Integer,T>
 
 Parameters:
 
 index - a potential function argument
 
 Returns:
 
 true, if the given value is contained in the function's domain, false otherwise
 - last
```
default T last()
```
 Description copied from interface: Traversable
 
 Dual of Traversable.head(), returning the last element.
 
 Specified by:
 
 last in interface Traversable<T>
 
 Returns:
 
 the last element.
 - lastIndexOfSlice
```
default int lastIndexOfSlice(java.lang.Iterable<? extends T> that,
 int end)
```
 Description copied from interface: Seq
 
 Finds last index before or at a given end index where this sequence contains a given sequence as a slice.
 
 Specified by:
 
 lastIndexOfSlice in interface Seq<T>
 
 Parameters:
 
 that - the sequence to test
 
 end - the end index
 
 Returns:
 
 the last index <= end such that the elements of this sequence starting at this index match the elements of sequence that, or -1 of no such slice exists.
 - lastIndexWhere
```
default int lastIndexWhere(java.util.function.Predicate<? super T> predicate,
 int end)
```
 Description copied from interface: Seq
 
 Finds index of last element satisfying some predicate before or at given end index.
 
 Specified by:
 
 lastIndexWhere in interface Seq<T>
 
 Parameters:
 
 predicate - the predicate used to test elements.
 
 end - the maximum index of the search
 
 Returns:
 
 the index <= end of the last element of this Seq that satisfies the given predicate, or -1, if none exists.
 - map
```
 IndexedSeq map(java.util.function.Function<? super T,? extends U> mapper)
```
 Description copied from interface: Traversable
 
 Maps the elements of this Traversable to elements of a new type preserving their order, if any.
 
 Specified by:
 
 map in interface Seq<T>
 
 Specified by:
 
 map in interface Traversable<T>
 
 Specified by:
 
 map in interface Value<T>
 
 Type Parameters:
 
 U - Component type of the target Traversable
 
 Parameters:
 
 mapper - A mapper.
 
 Returns:
 
 a mapped Traversable
 - orElse
```
IndexedSeq<T> orElse(java.lang.Iterable<? extends T> other)
```
 Description copied from interface: Traversable
 
 Returns this Traversable if it is nonempty, otherwise return the alternative.
 
 Specified by:
 
 orElse in interface Seq<T>
 
 Specified by:
 
 orElse in interface Traversable<T>
 
 Parameters:
 
 other - An alternative Traversable
 
 Returns:
 
 this Traversable if it is nonempty, otherwise return the alternative.
 - orElse
```
IndexedSeq<T> orElse(java.util.function.Supplier<? extends java.lang.Iterable<? extends T>> supplier)
```
 Description copied from interface: Traversable
 
 Returns this Traversable if it is nonempty, otherwise return the result of evaluating supplier.
 
 Specified by:
 
 orElse in interface Seq<T>
 
 Specified by:
 
 orElse in interface Traversable<T>
 
 Parameters:
 
 supplier - An alternative Traversable supplier
 
 Returns:
 
 this Traversable if it is nonempty, otherwise return the result of evaluating supplier.
 - padTo
```
IndexedSeq<T> padTo(int length,
 T element)
```
 Description copied from interface: Seq
 
 A copy of this sequence with an element appended until a given target length is reached.
 Note: lazily-evaluated Seq implementations need to process all elements in order to gather the overall length.
 
 Specified by:
 
 padTo in interface Seq<T>
 
 Parameters:
 
 length - the target length
 
 element - the padding element
 
 Returns:
 
 a new sequence consisting of all elements of this sequence followed by the minimal number of occurrences of element so that the resulting sequence has a length of at least length.
 - patch
```
IndexedSeq<T> patch(int from,
 java.lang.Iterable<? extends T> that,
 int replaced)
```
 Description copied from interface: Seq
 
 Produces a new list where a slice of elements in this list is replaced by another sequence.
 
 Specified by:
 
 patch in interface Seq<T>
 
 Parameters:
 
 from - the index of the first replaced element
 
 that - sequence for replacement
 
 replaced - the number of elements to drop in the original list
 
 Returns:
 
 a new sequence.
 - partition
```
Tuple2<? extends IndexedSeq<T>,? extends IndexedSeq<T>> partition(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Traversable
 
 Creates a partition of this Traversable by splitting this elements in two in distinct traversables according to a predicate.
 
 Specified by:
 
 partition in interface Seq<T>
 
 Specified by:
 
 partition in interface Traversable<T>
 
 Parameters:
 
 predicate - A predicate which classifies an element if it is in the first or the second traversable.
 
 Returns:
 
 A disjoint union of two traversables. The first Traversable contains all elements that satisfy the given predicate, the second Traversable contains all elements that don't. The original order of elements is preserved.
 - peek
```
IndexedSeq<T> peek(java.util.function.Consumer<? super T> action)
```
 Description copied from interface: Value
 
 Performs the given action on the first element if this is an eager implementation. Performs the given action on all elements (the first immediately, successive deferred), if this is a lazy implementation.
 
 Specified by:
 
 peek in interface Seq<T>
 
 Specified by:
 
 peek in interface Traversable<T>
 
 Specified by:
 
 peek in interface Value<T>
 
 Parameters:
 
 action - The action that will be performed on the element(s).
 
 Returns:
 
 this instance
 - permutations
```
IndexedSeq<? extends IndexedSeq<T>> permutations()
```
 Description copied from interface: Seq
 Computes all unique permutations.
 Example:
 [].permutations() = [] [1,2,3].permutations() = [ [1,2,3], [1,3,2], [2,1,3], [2,3,1], [3,1,2], [3,2,1] ]
 Specified by:
 
 permutations in interface Seq<T>
 
 Returns:
 
 this unique permutations
 - prepend
```
IndexedSeq<T> prepend(T element)
```
 Description copied from interface: Seq
 
 Prepends an element to this.
 
 Specified by:
 
 prepend in interface Seq<T>
 
 Parameters:
 
 element - An element
 
 Returns:
 
 A new Seq containing the given element prepended to this elements
 - prependAll
```
IndexedSeq<T> prependAll(java.lang.Iterable<? extends T> elements)
```
 Description copied from interface: Seq
 
 Prepends all given elements to this.
 
 Specified by:
 
 prependAll in interface Seq<T>
 
 Parameters:
 
 elements - An Iterable of elements
 
 Returns:
 
 A new Seq containing the given elements prepended to this elements
 - remove
```
IndexedSeq<T> remove(T element)
```
 Description copied from interface: Seq
 
 Removes the first occurrence of the given element.
 
 Specified by:
 
 remove in interface Seq<T>
 
 Parameters:
 
 element - An element to be removed from this Seq.
 
 Returns:
 
 a Seq containing all elements of this without the first occurrence of the given element.
 - removeFirst
```
IndexedSeq<T> removeFirst(java.util.function.Predicate<T> predicate)
```
 Description copied from interface: Seq
 
 Removes the first occurrence that satisfy predicate
 
 Specified by:
 
 removeFirst in interface Seq<T>
 
 Parameters:
 
 predicate - an predicate
 
 Returns:
 
 a new Seq
 - removeLast
```
IndexedSeq<T> removeLast(java.util.function.Predicate<T> predicate)
```
 Description copied from interface: Seq
 
 Removes the last occurrence that satisfy predicate
 
 Specified by:
 
 removeLast in interface Seq<T>
 
 Parameters:
 
 predicate - an predicate
 
 Returns:
 
 a new Seq
 - removeAt
```
IndexedSeq<T> removeAt(int index)
```
 Description copied from interface: Seq
 
 Removes the element at the specified position in this sequence. Shifts any subsequent elements to the left (subtracts one from their indices).
 
 Specified by:
 
 removeAt in interface Seq<T>
 
 Parameters:
 
 index - position of element to remove
 
 Returns:
 
 a sequence containing all elements of this without the element at the specified position.
 - removeAll
```
IndexedSeq<T> removeAll(T element)
```
 Description copied from interface: Seq
 
 Removes all occurrences of the given element.
 
 Specified by:
 
 removeAll in interface Seq<T>
 
 Parameters:
 
 element - An element to be removed from this Seq.
 
 Returns:
 
 a Seq containing all elements of this but not the given element.
 - removeAll
```
IndexedSeq<T> removeAll(java.lang.Iterable<? extends T> elements)
```
 Description copied from interface: Seq
 
 Removes all occurrences of the given elements.
 
 Specified by:
 
 removeAll in interface Seq<T>
 
 Parameters:
 
 elements - Elements to be removed from this Seq.
 
 Returns:
 
 a Seq containing all elements of this but none of the given elements.
 - removeAll
```
@Deprecated
IndexedSeq<T> removeAll(java.util.function.Predicate<? super T> predicate)
```
 Deprecated.
 
 Description copied from interface: Seq
 
 Returns a new Seq consisting of all elements which do not satisfy the given predicate.
 
 Specified by:
 
 removeAll in interface Seq<T>
 
 Parameters:
 
 predicate - the predicate used to test elements
 
 Returns:
 
 a new Seq
 - replace
```
IndexedSeq<T> replace(T currentElement,
 T newElement)
```
 Description copied from interface: Traversable
 
 Replaces the first occurrence (if exists) of the given currentElement with newElement.
 
 Specified by:
 
 replace in interface Seq<T>
 
 Specified by:
 
 replace in interface Traversable<T>
 
 Parameters:
 
 currentElement - An element to be substituted.
 
 newElement - A replacement for currentElement.
 
 Returns:
 
 a Traversable containing all elements of this where the first occurrence of currentElement is replaced with newElement.
 - replaceAll
```
IndexedSeq<T> replaceAll(T currentElement,
 T newElement)
```
 Description copied from interface: Traversable
 
 Replaces all occurrences of the given currentElement with newElement.
 
 Specified by:
 
 replaceAll in interface Seq<T>
 
 Specified by:
 
 replaceAll in interface Traversable<T>
 
 Parameters:
 
 currentElement - An element to be substituted.
 
 newElement - A replacement for currentElement.
 
 Returns:
 
 a Traversable containing all elements of this where all occurrences of currentElement are replaced with newElement.
 - retainAll
```
IndexedSeq<T> retainAll(java.lang.Iterable<? extends T> elements)
```
 Description copied from interface: Traversable
 
 Keeps all occurrences of the given elements from this.
 
 Specified by:
 
 retainAll in interface Seq<T>
 
 Specified by:
 
 retainAll in interface Traversable<T>
 
 Parameters:
 
 elements - Elements to be kept.
 
 Returns:
 
 a Traversable containing all occurrences of the given elements.
 - reverse
```
IndexedSeq<T> reverse()
```
 Description copied from interface: Seq
 
 Reverses the order of elements.
 
 Specified by:
 
 reverse in interface Seq<T>
 
 Returns:
 
 the reversed elements.
 - reverseIterator
```
default Iterator<T> reverseIterator()
```
 Description copied from interface: Seq
 
 An iterator yielding elements in reversed order.
 Note: xs.reverseIterator() is the same as xs.reverse().iterator() but might be more efficient.
 
 Specified by:
 
 reverseIterator in interface Seq<T>
 
 Returns:
 
 an iterator yielding the elements of this Seq in reversed order
 - rotateLeft
```
IndexedSeq<T> rotateLeft(int n)
```
 Description copied from interface: Seq
 Circular rotates the elements by the specified distance to the left direction.
 // = List(3, 4, 5, 1, 2) List.of(1, 2, 3, 4, 5).rotateLeft(2);
 Specified by:
 
 rotateLeft in interface Seq<T>
 
 Parameters:
 
 n - distance of left rotation
 
 Returns:
 
 the rotated elements.
 - rotateRight
```
IndexedSeq<T> rotateRight(int n)
```
 Description copied from interface: Seq
 Circular rotates the elements by the specified distance to the right direction.
 // = List(4, 5, 1, 2, 3) List.of(1, 2, 3, 4, 5).rotateRight(2);
 Specified by:
 
 rotateRight in interface Seq<T>
 
 Parameters:
 
 n - distance of right rotation
 
 Returns:
 
 the rotated elements.
 - scan
```
IndexedSeq<T> scan(T zero,
 java.util.function.BiFunction<? super T,? super T,? extends T> operation)
```
 Description copied from interface: Traversable
 
 Computes a prefix scan of the elements of the collection. Note: The neutral element z may be applied more than once.
 
 Specified by:
 
 scan in interface Seq<T>
 
 Specified by:
 
 scan in interface Traversable<T>
 
 Parameters:
 
 zero - neutral element for the operator op
 
 operation - the associative operator for the scan
 
 Returns:
 
 a new traversable collection containing the prefix scan of the elements in this traversable collection
 - scanLeft
```
 IndexedSeq scanLeft(U zero,
 java.util.function.BiFunction<? super U,? super T,? extends U> operation)
```
 Description copied from interface: Traversable
 
 Produces a collection containing cumulative results of applying the operator going left to right. Note: will not terminate for infinite-sized collections. Note: might return different results for different runs, unless the underlying collection type is ordered.
 
 Specified by:
 
 scanLeft in interface Seq<T>
 
 Specified by:
 
 scanLeft in interface Traversable<T>
 
 Type Parameters:
 
 U - the type of the elements in the resulting collection
 
 Parameters:
 
 zero - the initial value
 
 operation - the binary operator applied to the intermediate result and the element
 
 Returns:
 
 collection with intermediate results
 - scanRight
```
 IndexedSeq scanRight(U zero,
 java.util.function.BiFunction<? super T,? super U,? extends U> operation)
```
 Description copied from interface: Traversable
 
 Produces a collection containing cumulative results of applying the operator going right to left. The head of the collection is the last cumulative result. Note: will not terminate for infinite-sized collections. Note: might return different results for different runs, unless the underlying collection type is ordered.
 
 Specified by:
 
 scanRight in interface Seq<T>
 
 Specified by:
 
 scanRight in interface Traversable<T>
 
 Type Parameters:
 
 U - the type of the elements in the resulting collection
 
 Parameters:
 
 zero - the initial value
 
 operation - the binary operator applied to the intermediate result and the element
 
 Returns:
 
 collection with intermediate results
 - segmentLength
```
default int segmentLength(java.util.function.Predicate<? super T> predicate,
 int from)
```
 Description copied from interface: Seq
 
 Computes length of longest segment whose elements all satisfy some predicate.
 Note: may not terminate for infinite sequences.
 
 Specified by:
 
 segmentLength in interface Seq<T>
 
 Parameters:
 
 predicate - the predicate used to test elements.
 
 from - the index where the search starts.
 
 Returns:
 
 the length of the longest segment of this sequence starting from index from such that every element of the segment satisfies the predicate p.
 - shuffle
```
IndexedSeq<T> shuffle()
```
 Description copied from interface: Seq
 
 Randomize the order of the elements in the current sequence.
 
 Specified by:
 
 shuffle in interface Seq<T>
 
 Returns:
 
 a sequence with the same elements as the current sequence in a random order.
 - shuffle
```
IndexedSeq<T> shuffle(java.util.Random random)
```
 Description copied from interface: Seq
 
 Randomize the order of the elements in the current sequence using the given source of randomness.
 
 Specified by:
 
 shuffle in interface Seq<T>
 
 Parameters:
 
 random - A random number generator
 
 Returns:
 
 a sequence with the same elements as the current sequence in a random order.
 - slice
```
IndexedSeq<T> slice(int beginIndex,
 int endIndex)
```
 Description copied from interface: Seq
 Returns a Seq that is a slice of this. The slice begins with the element at the specified beginIndex and extends to the element at index endIndex - 1.
 Examples:
 List.of(1, 2, 3, 4).slice(1, 3); // = (2, 3) List.of(1, 2, 3, 4).slice(0, 4); // = (1, 2, 3, 4) List.of(1, 2, 3, 4).slice(2, 2); // = () List.of(1, 2).slice(1, 0); // = () List.of(1, 2).slice(-10, 10); // = (1, 2)
 See also Seq.subSequence(int, int) which throws in some cases instead of returning a sequence.
 Specified by:
 
 slice in interface Seq<T>
 
 Parameters:
 
 beginIndex - the beginning index, inclusive
 
 endIndex - the end index, exclusive
 
 Returns:
 
 the specified slice
 - slideBy
```
Iterator<? extends IndexedSeq<T>> slideBy(java.util.function.Function<? super T,?> classifier)
```
 Description copied from interface: Traversable
 Slides a non-overlapping window of a variable size over this Traversable.
 Each window contains elements with the same class, as determined by classifier. Two consecutive values in this Traversable will be in the same window only if classifier returns equal values for them. Otherwise, the values will constitute the last element of the previous window and the first element of the next window.
 Examples:
 [].slideBy(Function.identity()) = [] [1,2,3,4,4,5].slideBy(Function.identity()) = [[1],[2],[3],[4,4],[5]] [1,2,3,10,12,5,7,20,29].slideBy(x -> x/10) = [[1,2,3],[10,12],[5,7],[20,29]]
 Specified by:
 
 slideBy in interface Seq<T>
 
 Specified by:
 
 slideBy in interface Traversable<T>
 
 Parameters:
 
 classifier - A function which classifies elements into classes
 
 Returns:
 
 A new Iterator of windows of the grouped elements
 - sliding
```
Iterator<? extends IndexedSeq<T>> sliding(int size)
```
 Description copied from interface: Traversable
 
 Slides a window of a specific size and step size 1 over this Traversable by calling Traversable.sliding(int, int).
 
 Specified by:
 
 sliding in interface Seq<T>
 
 Specified by:
 
 sliding in interface Traversable<T>
 
 Parameters:
 
 size - a positive window size
 
 Returns:
 
 a new Iterator of windows of a specific size using step size 1
 - sliding
```
Iterator<? extends IndexedSeq<T>> sliding(int size,
 int step)
```
 Description copied from interface: Traversable
 Slides a window of a specific size and step size over this Traversable.
 Examples:
 [].sliding(1,1) = [] [1,2,3,4,5].sliding(2,3) = [[1,2],[4,5]] [1,2,3,4,5].sliding(2,4) = [[1,2],[5]] [1,2,3,4,5].sliding(2,5) = [[1,2]] [1,2,3,4].sliding(5,3) = [[1,2,3,4],[4]]
 Specified by:
 
 sliding in interface Seq<T>
 
 Specified by:
 
 sliding in interface Traversable<T>
 
 Parameters:
 
 size - a positive window size
 
 step - a positive step size
 
 Returns:
 
 a new Iterator of windows of a specific size using a specific step size
 - sorted
```
IndexedSeq<T> sorted()
```
 Description copied from interface: Seq
 
 Sorts this elements according to their natural order. If this elements are not Comparable, a java.lang.ClassCastException may be thrown.
 
 Specified by:
 
 sorted in interface Seq<T>
 
 Returns:
 
 A sorted version of this
 - sorted
```
IndexedSeq<T> sorted(java.util.Comparator<? super T> comparator)
```
 Description copied from interface: Seq
 
 Sorts this elements according to the provided Comparator. If this elements are not Comparable, a java.lang.ClassCastException may be thrown.
 
 Specified by:
 
 sorted in interface Seq<T>
 
 Parameters:
 
 comparator - A comparator
 
 Returns:
 
 a sorted version of this
 - sortBy
```
> IndexedSeq<T> sortBy(java.util.function.Function<? super T,? extends U> mapper)
```
 Description copied from interface: Seq
 
 Sorts this elements by comparing the elements in a different domain, using the given mapper.
 
 Specified by:
 
 sortBy in interface Seq<T>
 
 Type Parameters:
 
 U - The domain where elements are compared
 
 Parameters:
 
 mapper - A mapper
 
 Returns:
 
 a sorted version of this
 - sortBy
```
 IndexedSeq<T> sortBy(java.util.Comparator<? super U> comparator,
 java.util.function.Function<? super T,? extends U> mapper)
```
 Description copied from interface: Seq
 
 Sorts this elements by comparing the elements in a different domain, using the given mapper.
 
 Specified by:
 
 sortBy in interface Seq<T>
 
 Type Parameters:
 
 U - The domain where elements are compared
 
 Parameters:
 
 comparator - A comparator
 
 mapper - A mapper
 
 Returns:
 
 a sorted version of this
 - span
```
Tuple2<? extends IndexedSeq<T>,? extends IndexedSeq<T>> span(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Traversable
 
 Returns a tuple where the first element is the longest prefix of elements that satisfy the given predicate and the second element is the remainder.
 
 Specified by:
 
 span in interface Seq<T>
 
 Specified by:
 
 span in interface Traversable<T>
 
 Parameters:
 
 predicate - A predicate.
 
 Returns:
 
 a Tuple containing the longest prefix of elements that satisfy p and the remainder.
 - startsWith
```
default boolean startsWith(java.lang.Iterable<? extends T> that,
 int offset)
```
 Description copied from interface: Seq
 
 Tests whether this list contains the given sequence at a given index.
 Note: If the both the receiver object this and the argument that are infinite sequences this method may not terminate.
 
 Specified by:
 
 startsWith in interface Seq<T>
 
 Parameters:
 
 that - the sequence to test
 
 offset - the index where the sequence is searched.
 
 Returns:
 
 true if that is empty or that is prefix of this collection starting from the given offset, false otherwise.
 - subSequence
```
IndexedSeq<T> subSequence(int beginIndex)
```
 Description copied from interface: Seq
 Returns a Seq that is a subsequence of this. The subsequence begins with the element at the specified beginIndex and extends to the end of this Seq.
 Examples:
 List.of(1, 2).subSequence(0); // = (1, 2) List.of(1, 2).subSequence(1); // = (2) List.of(1, 2).subSequence(2); // = () List.of(1, 2).subSequence(10); // throws IndexOutOfBoundsException List.of(1, 2).subSequence(-10); // throws IndexOutOfBoundsException
 See also Seq.drop(int) which is similar but does not throw.
 Specified by:
 
 subSequence in interface Seq<T>
 
 Parameters:
 
 beginIndex - the beginning index, inclusive
 
 Returns:
 
 the specified subsequence
 - subSequence
```
IndexedSeq<T> subSequence(int beginIndex,
 int endIndex)
```
 Description copied from interface: Seq
 Returns a Seq that is a subsequence of this. The subsequence begins with the element at the specified beginIndex and extends to the element at index endIndex - 1.
 Examples:
 List.of(1, 2, 3, 4).subSequence(1, 3); // = (2, 3) List.of(1, 2, 3, 4).subSequence(0, 4); // = (1, 2, 3, 4) List.of(1, 2, 3, 4).subSequence(2, 2); // = () List.of(1, 2).subSequence(1, 0); // throws IndexOutOfBoundsException List.of(1, 2).subSequence(-10, 1); // throws IndexOutOfBoundsException List.of(1, 2).subSequence(0, 10); // throws IndexOutOfBoundsException
 See also Seq.slice(int, int) which returns an empty sequence instead of throwing.
 Specified by:
 
 subSequence in interface Seq<T>
 
 Parameters:
 
 beginIndex - the beginning index, inclusive
 
 endIndex - the end index, exclusive
 
 Returns:
 
 the specified subsequence
 - tail
```
IndexedSeq<T> tail()
```
 Description copied from interface: Traversable
 
 Drops the first element of a non-empty Traversable.
 
 Specified by:
 
 tail in interface Seq<T>
 
 Specified by:
 
 tail in interface Traversable<T>
 
 Returns:
 
 A new instance of Traversable containing all elements except the first.
 - tailOption
```
Option<? extends IndexedSeq<T>> tailOption()
```
 Description copied from interface: Traversable
 
 Drops the first element of a non-empty Traversable and returns an Option.
 
 Specified by:
 
 tailOption in interface Seq<T>
 
 Specified by:
 
 tailOption in interface Traversable<T>
 
 Returns:
 
 Some(traversable) or None if this is empty.
 - take
```
IndexedSeq<T> take(int n)
```
 Description copied from interface: Traversable
 
 Takes the first n elements of this or all elements, if this length < n.
 The result is equivalent to sublist(0, max(0, min(length(), n))) but does not throw if n < 0 or n > length().
 In the case of n < 0 the empty instance is returned, in the case of n > length() this is returned.
 
 Specified by:
 
 take in interface Seq<T>
 
 Specified by:
 
 take in interface Traversable<T>
 
 Parameters:
 
 n - The number of elements to take.
 
 Returns:
 
 A new instance consisting of the first n elements of this or all elements, if this has less than n elements.
 - takeUntil
```
IndexedSeq<T> takeUntil(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Traversable
 
 Takes elements until the predicate holds for the current element.
 Note: This is essentially the same as takeWhile(predicate.negate()). It is intended to be used with method references, which cannot be negated directly.
 
 Specified by:
 
 takeUntil in interface Seq<T>
 
 Specified by:
 
 takeUntil in interface Traversable<T>
 
 Parameters:
 
 predicate - A condition tested subsequently for this elements.
 
 Returns:
 
 a new instance consisting of all elements before the first one which does satisfy the given predicate.
 - takeWhile
```
IndexedSeq<T> takeWhile(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Traversable
 
 Takes elements while the predicate holds for the current element.
 
 Specified by:
 
 takeWhile in interface Seq<T>
 
 Specified by:
 
 takeWhile in interface Traversable<T>
 
 Parameters:
 
 predicate - A condition tested subsequently for the contained elements.
 
 Returns:
 
 a new instance consisting of all elements before the first one which does not satisfy the given predicate.
 - takeRight
```
IndexedSeq<T> takeRight(int n)
```
 Description copied from interface: Traversable
 
 Takes the last n elements of this or all elements, if this length < n.
 The result is equivalent to sublist(max(0, min(length(), length() - n)), n), i.e. takeRight will not throw if n < 0 or n > length().
 In the case of n < 0 the empty instance is returned, in the case of n > length() this is returned.
 
 Specified by:
 
 takeRight in interface Seq<T>
 
 Specified by:
 
 takeRight in interface Traversable<T>
 
 Parameters:
 
 n - The number of elements to take.
 
 Returns:
 
 A new instance consisting of the last n elements of this or all elements, if this has less than n elements.
 - takeRightUntil
```
IndexedSeq<T> takeRightUntil(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Seq
 
 Takes elements until the predicate holds for the current element, starting from the end.
 
 Specified by:
 
 takeRightUntil in interface Seq<T>
 
 Parameters:
 
 predicate - A condition tested subsequently for this elements, starting from the end.
 
 Returns:
 
 a new instance consisting of all elements after the last one which does satisfy the given predicate.
 - takeRightWhile
```
IndexedSeq<T> takeRightWhile(java.util.function.Predicate<? super T> predicate)
```
 Description copied from interface: Seq
 
 Takes elements while the predicate holds for the current element, starting from the end.
 Note: This is essentially the same as takeRightUntil(predicate.negate()). It is intended to be used with method references, which cannot be negated directly.
 
 Specified by:
 
 takeRightWhile in interface Seq<T>
 
 Parameters:
 
 predicate - A condition tested subsequently for this elements, starting from the end.
 
 Returns:
 
 a new instance consisting of all elements after the last one which does not satisfy the given predicate.
 - unzip
```
<T1,T2> Tuple2<? extends IndexedSeq<T1>,? extends IndexedSeq<T2>> unzip(java.util.function.Function<? super T,Tuple2<? extends T1,? extends T2>> unzipper)
```
 Description copied from interface: Traversable
 
 Unzips this elements by mapping this elements to pairs which are subsequently split into two distinct sets.
 
 Specified by:
 
 unzip in interface Seq<T>
 
 Specified by:
 
 unzip in interface Traversable<T>
 
 Type Parameters:
 
 T1 - 1st element type of a pair returned by unzipper
 
 T2 - 2nd element type of a pair returned by unzipper
 
 Parameters:
 
 unzipper - a function which converts elements of this to pairs
 
 Returns:
 
 A pair of set containing elements split by unzipper
 - unzip3
```
<T1,T2,T3> Tuple3<? extends IndexedSeq<T1>,? extends IndexedSeq<T2>,? extends IndexedSeq<T3>> unzip3(java.util.function.Function<? super T,Tuple3<? extends T1,? extends T2,? extends T3>> unzipper)
```
 Description copied from interface: Traversable
 
 Unzips this elements by mapping this elements to triples which are subsequently split into three distinct sets.
 
 Specified by:
 
 unzip3 in interface Seq<T>
 
 Specified by:
 
 unzip3 in interface Traversable<T>
 
 Type Parameters:
 
 T1 - 1st element type of a triplet returned by unzipper
 
 T2 - 2nd element type of a triplet returned by unzipper
 
 T3 - 3rd element type of a triplet returned by unzipper
 
 Parameters:
 
 unzipper - a function which converts elements of this to pairs
 
 Returns:
 
 A triplet of set containing elements split by unzipper
 - update
```
IndexedSeq<T> update(int index,
 T element)
```
 Description copied from interface: Seq
 
 Updates the given element at the specified index.
 
 Specified by:
 
 update in interface Seq<T>
 
 Parameters:
 
 index - an index
 
 element - an element
 
 Returns:
 
 a new Seq consisting of all previous elements, with a single one (at the given index), changed to the new value.
 - update
```
IndexedSeq<T> update(int index,
 java.util.function.Function<? super T,? extends T> updater)
```
 Description copied from interface: Seq
 
 Updates the given element at the specified index using the specified function.
 
 Specified by:
 
 update in interface Seq<T>
 
 Parameters:
 
 index - an index
 
 updater - a function transforming the previous value
 
 Returns:
 
 a new Seq consisting of all previous elements, with a single one (at the given index), changed to the new value.
 - zip
```
 IndexedSeq<Tuple2<T,U>> zip(java.lang.Iterable<? extends U> that)
```
 Description copied from interface: Traversable
 
 Returns a traversable formed from this traversable and another Iterable collection by combining corresponding elements in pairs. If one of the two iterables is longer than the other, its remaining elements are ignored.
 The length of the returned traversable is the minimum of the lengths of this traversable and that iterable.
 
 Specified by:
 
 zip in interface Seq<T>
 
 Specified by:
 
 zip in interface Traversable<T>
 
 Type Parameters:
 
 U - The type of the second half of the returned pairs.
 
 Parameters:
 
 that - The Iterable providing the second half of each result pair.
 
 Returns:
 
 a new traversable containing pairs consisting of corresponding elements of this traversable and that iterable.
 - zipWith
```
<U,R> IndexedSeq<R> zipWith(java.lang.Iterable<? extends U> that,
 java.util.function.BiFunction<? super T,? super U,? extends R> mapper)
```
 Description copied from interface: Traversable
 
 Returns a traversable formed from this traversable and another Iterable collection by mapping elements. If one of the two iterables is longer than the other, its remaining elements are ignored.
 The length of the returned traversable is the minimum of the lengths of this traversable and that iterable.
 
 Specified by:
 
 zipWith in interface Seq<T>
 
 Specified by:
 
 zipWith in interface Traversable<T>
 
 Type Parameters:
 
 U - The type of the second parameter of the mapper.
 
 R - The type of the mapped elements.
 
 Parameters:
 
 that - The Iterable providing the second parameter of the mapper.
 
 mapper - a mapper.
 
 Returns:
 
 a new traversable containing mapped elements of this traversable and that iterable.
 - zipAll
```
 IndexedSeq<Tuple2<T,U>> zipAll(java.lang.Iterable<? extends U> that,
 T thisElem,
 U thatElem)
```
 Description copied from interface: Traversable
 
 Returns a traversable formed from this traversable and another Iterable by combining corresponding elements in pairs. If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.
 The length of the returned traversable is the maximum of the lengths of this traversable and that iterable.
 Special case: if this traversable is shorter than that elements, and that elements contains duplicates, the resulting traversable may be shorter than the maximum of the lengths of this and that because a traversable contains an element at most once.
 If this Traversable is shorter than that, thisElem values are used to fill the result. If that is shorter than this Traversable, thatElem values are used to fill the result.
 
 Specified by:
 
 zipAll in interface Seq<T>
 
 Specified by:
 
 zipAll in interface Traversable<T>
 
 Type Parameters:
 
 U - The type of the second half of the returned pairs.
 
 Parameters:
 
 that - The Iterable providing the second half of each result pair.
 
 thisElem - The element to be used to fill up the result if this traversable is shorter than that.
 
 thatElem - The element to be used to fill up the result if that is shorter than this traversable.
 
 Returns:
 
 A new traversable containing pairs consisting of corresponding elements of this traversable and that.
 - zipWithIndex
```
IndexedSeq<Tuple2<T,java.lang.Integer>> zipWithIndex()
```
 Description copied from interface: Traversable
 
 Zips this traversable with its indices.
 
 Specified by:
 
 zipWithIndex in interface Seq<T>
 
 Specified by:
 
 zipWithIndex in interface Traversable<T>
 
 Returns:
 
 A new traversable containing all elements of this traversable paired with their index, starting with 0.
 - zipWithIndex
```
 IndexedSeq zipWithIndex(java.util.function.BiFunction<? super T,? super java.lang.Integer,? extends U> mapper)
```
 Description copied from interface: Traversable
 
 Returns a traversable formed from this traversable and another Iterable collection by mapping elements. If one of the two iterables is longer than the other, its remaining elements are ignored.
 The length of the returned traversable is the minimum of the lengths of this traversable and that iterable.
 
 Specified by:
 
 zipWithIndex in interface Seq<T>
 
 Specified by:
 
 zipWithIndex in interface Traversable<T>
 
 Type Parameters:
 
 U - The type of the mapped elements.
 
 Parameters:
 
 mapper - a mapper.
 
 Returns:
 
 a new traversable containing mapped elements of this traversable and that iterable.
 - search
```
default int search(T element)
```
 Searches this sequence for a specific element using a binary search. The sequence must already be sorted into ascending natural order. If it is not sorted, the results are undefined.
 
 Specified by:
 
 search in interface Seq<T>
 
 Parameters:
 
 element - the element to find
 
 Returns:
 
 the index of the search element, if it is contained in the sequence; otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the element would be inserted into the sequence. Note that this guarantees that the return value will be >= 0 if and only if the element is found.
 
 Throws:
 
 java.lang.ClassCastException - if T cannot be cast to Comparable<? super T>
 - search
```
default int search(T element,
 java.util.Comparator<? super T> comparator)
```
 Searches this sequence for a specific element using a binary search. The sequence must already be sorted into ascending order according to the specified comparator. If it is not sorted, the results are undefined.
 
 Specified by:
 
 search in interface Seq<T>
 
 Parameters:
 
 element - the element to find
 
 comparator - the comparator by which this sequence is ordered
 
 Returns:
 
 the index of the search element, if it is contained in the sequence; otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the element would be inserted into the sequence. Note that this guarantees that the return value will be >= 0 if and only if the element is found.

Interface IndexedSeq<T>

Field Summary

Method Summary

Methods inherited from interface io.vavr.Function1

Methods inherited from interface io.vavr.Iterable

Methods inherited from interface io.vavr.collection.Seq

Methods inherited from interface io.vavr.collection.Traversable

Methods inherited from interface io.vavr.Value

Field Detail

serialVersionUID

Method Detail

narrow

append

appendAll

asJava

asJavaMutable

asPartialFunction

collect

combinations

combinations

crossProduct

distinct

distinctBy

distinctBy

drop

dropUntil

dropWhile

dropRight

dropRightUntil

dropRightWhile

endsWith

filter

filterNot

reject

flatMap

groupBy

indexWhere

grouped

indexOfSlice

init

initOption

insert

insertAll

intersperse

isDefinedAt

last

lastIndexOfSlice

lastIndexWhere

map

orElse

orElse

padTo

patch

partition

peek

permutations

prepend

prependAll

remove

removeFirst

removeLast

removeAt

removeAll

removeAll

removeAll

replace

replaceAll

retainAll

reverse

reverseIterator

rotateLeft

rotateRight

scan

scanLeft

scanRight

segmentLength

shuffle

shuffle

slice

slideBy