T - Component type of the List.public static final class List.Nil<T> extends Object implements List<T>, Serializable
List.| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(Object o)
In Vavr there are four basic classes of collections:
Seq (sequential elements)
Set (distinct elements)
Map (indexed elements)
Multimap (indexed collections)
Two collection instances of these classes are equal if and only if both collections
belong to the same basic collection class (Seq, Set, Map or Multimap)
contain the same elements
have the same element order, if the collections are of type Seq
Two Map/Multimap elements, resp.
|
int |
hashCode()
Returns the hash code of this collection.
|
T |
head()
Returns the first element of a non-empty Traversable.
|
static <T> List.Nil<T> |
instance()
Returns the singleton instance of the linked list.
|
boolean |
isEmpty()
Checks if this Traversable is empty.
|
int |
length()
Computes the number of elements of this Traversable.
|
List<T> |
tail()
Drops the first element of a non-empty Traversable.
|
String |
toString()
Clarifies that values have a proper toString() method implemented.
|
clone, finalize, getClass, notify, notifyAll, wait, wait, waitappend, appendAll, asJava, asJava, asJavaMutable, asJavaMutable, collect, collector, combinations, combinations, crossProduct, distinct, distinctBy, distinctBy, drop, dropRight, dropRightUntil, dropRightWhile, dropUntil, dropWhile, empty, fill, fill, filter, flatMap, get, groupBy, grouped, hasDefiniteSize, indexOf, init, initOption, insert, insertAll, intersperse, isAsync, isLazy, isTraversableAgain, last, lastIndexOf, leftPadTo, map, narrow, of, of, ofAll, ofAll, ofAll, ofAll, ofAll, ofAll, ofAll, ofAll, ofAll, ofAll, orElse, orElse, padTo, partition, patch, peek, peek, peekOption, permutations, pop, pop2, pop2Option, popOption, prepend, prependAll, push, push, pushAll, range, range, range, rangeBy, rangeBy, rangeBy, rangeBy, rangeClosed, rangeClosed, rangeClosed, rangeClosedBy, rangeClosedBy, rangeClosedBy, rangeClosedBy, reject, remove, removeAll, removeAll, removeAll, removeAt, removeFirst, removeLast, replace, replaceAll, retainAll, reverse, rotateLeft, rotateRight, scan, scanLeft, scanRight, shuffle, slice, slideBy, sliding, sliding, sortBy, sortBy, sorted, sorted, span, splitAt, splitAt, splitAtInclusive, stringPrefix, subSequence, subSequence, tabulate, tailOption, take, takeRight, takeRightUntil, takeRightWhile, takeUntil, takeWhile, transform, transpose, unfold, unfoldLeft, unfoldRight, unzip, unzip3, update, update, zip, zipAll, zipWith, zipWithIndex, zipWithIndexasPartialFunction, indexOfSlice, indexWhere, isDefinedAt, lastIndexOfSlice, lastIndexWhere, narrow, reverseIterator, search, search, segmentLengthapply, containsSlice, crossProduct, crossProduct, endsWith, foldRight, indexOf, indexOfOption, indexOfOption, indexOfSlice, indexOfSliceOption, indexOfSliceOption, indexWhere, indexWhereOption, indexWhereOption, isSequential, iterator, lastIndexOf, lastIndexOfOption, lastIndexOfOption, lastIndexOfSlice, lastIndexOfSliceOption, lastIndexOfSliceOption, lastIndexWhere, lastIndexWhereOption, lastIndexWhereOption, lift, narrow, prefixLength, startsWith, startsWith, withDefault, withDefaultValuearrangeBy, average, containsAll, count, existsUnique, find, findLast, foldLeft, forEachWithIndex, get, headOption, isDistinct, isOrdered, isSingleValued, iterator, lastOption, max, maxBy, maxBy, min, minBy, minBy, mkCharSeq, mkCharSeq, mkCharSeq, mkString, mkString, mkString, narrow, nonEmpty, product, reduceLeft, reduceLeftOption, reduceRight, reduceRightOption, single, singleOption, size, spliterator, sumfold, reduce, reduceOptioncollect, collect, contains, corresponds, eq, exists, forAll, forEach, getOrElse, getOrElse, getOrElseThrow, getOrElseTry, getOrNull, narrow, out, out, stderr, stdout, 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, toTree, toTree, toTry, toTry, toValid, toValid, toValidation, toValidation, toVectorgetIfDefined, unliftpublic static <T> List.Nil<T> instance()
T - Component type of the Listpublic T head()
Traversablehead in interface Traversable<T>public int length()
Traversable
Same as Traversable.size().
public List<T> tail()
Traversablepublic boolean isEmpty()
Traversablepublic boolean equals(Object o)
TraversableNotes:
public int hashCode()
Traversable
int hash = 1;
for (T t : this) { hash = hash * 31 + Objects.hashCode(t); }
int hash = 1;
for (T t : this) { hash += Objects.hashCode(t); }
public final class Hashed<K> {
private final K key;
private final Lazy<Integer> hashCode;
public Hashed(K key) {
this.key = key;
this.hashCode = Lazy.of(() -> Objects.hashCode(key));
}
public K key() {
return key;
}
@Override
public boolean equals(Object o) {
if (o == key) {
return true;
} else if (key != null && o instanceof Hashed) {
final Hashed that = (Hashed) o;
return key.equals(that.key);
} else {
return false;
}
}
@Override
public int hashCode() {
return hashCode.get();
}
@Override
public String toString() {
return "Hashed(" + (key == null ? "null" : key.toString()) + ")";
}
}Copyright © 2020. All Rights Reserved.