Comparison function that orders keys
Comparison function that orders keys.
This method is used to compare the receiver object (this
)
with the argument object (arg0
) for equivalence
This method is used to compare the receiver object (this
)
with the argument object (arg0
) for equivalence.
The default implementations of this method is an equivalence relation:
x
of type Any
,
x.equals(x)
should return true
.x
and y
of type
Any
, x.equals(y)
should return true
if and only
if y.equals(x)
returns true
.x
, y
, and z
of type AnyRef
if x.equals(y)
returns true
and
y.equals(z)
returns
true
, then x.equals(z)
should return true
.
If you override this method, you should verify that
your implementation remains an equivalence relation.
Additionally, when overriding this method it is often necessary to
override hashCode
to ensure that objects that are
"equal" (o1.equals(o2)
returns true
)
hash to the same Int
(o1.hashCode.equals(o2.hashCode)
).
the object to compare against this object for equality.
true
if the receiver object is equivalent to the argument; false
otherwise.
Returns the first key of the collection
Returns the first key of the collection.
Creates a ranged projection of this collection with no upper-bound
Creates a ranged projection of this collection with no upper-bound.
The lower-bound (inclusive) of the ranged projection.
Returns a hash code value for the object
Returns a hash code value for the object.
The default hashing algorithm is platform dependent.
Note that it is allowed for two objects to have identical hash
codes (o1.hashCode.equals(o2.hashCode)
) yet not be
equal (o1.equals(o2)
returns false
). A
degenerate implementation could always return 0
.
However, it is required that if two objects are equal
(o1.equals(o2)
returns true
) that they
have identical hash codes
(o1.hashCode.equals(o2.hashCode)
). Therefore, when
overriding this method, be sure to verify that the behavior is
consistent with the equals
method.
return as a projection the set of keys in this collection
return as a projection the set of keys in this collection
Returns the last key of the collection
Returns the last key of the collection.
Creates a ranged projection of this collection with both a lower-bound and an upper-bound
Creates a ranged projection of this collection with both a lower-bound and an upper-bound.
The upper-bound (exclusive) of the ranged projection.
...
...
Creates a ranged projection of this collection
Creates a ranged projection of this collection. Any mutations in the ranged projection will update this collection and vice versa. Note: keys are not garuanteed to be consistent between this collection and the projection. This is the case for buffers where indexing is relative to the projection.
The lower-bound (inclusive) of the ranged projection.
None
if there is no lower bound.
The upper-bound (exclusive) of the ranged projection.
None
if there is no upper bound.
Create a range projection of this collection with no lower-bound
Create a range projection of this collection with no lower-bound.
The upper-bound (inclusive) of the ranged projection.
Returns a string representation of the object
Returns a string representation of the object.
The default representation is platform dependent.
Creates a ranged projection of this collection with no lower-bound
Creates a ranged projection of this collection with no lower-bound.
The upper-bound (exclusive) of the ranged projection.
Any collection (including maps) whose keys (or elements) are ordered.