HashingEquality
Indicates whether the objects passed as a and b are equal.
Indicates whether the objects passed as a and b are equal.
a left-hand value being compared with another (right-hand-side one) for equality (e.g., a == b)
a right-hand value being compared with another (left-hand-side one) for equality (e.g., a == b)
true if the passed objects are "equal," as defined by this Equality instance
Returns a hash code for the specified object that is consistent with areEqual.
Returns a hash code for the specified object that is consistent with areEqual.
See the main documentation of this trait for more detail on the contract of hashCodeFor.
A final implementation of the areEquivalent method of Equivalence that just passes
a and b to areEqual and returns the result.
A final implementation of the areEquivalent method of Equivalence that just passes
a and b to areEqual and returns the result.
This method enables any Equality to be used where an Equivalence is needed, such
as the implicit enabling methods of TypeCheckedTripleEquals
and ConversionCheckedTripleEquals.
a left-hand value being compared with another, right-hand, value for equality (e.g., a == b)
a right-hand value being compared with another, left-hand, value for equality (e.g., a == b)
true if the passed objects are "equal," as defined by the areEqual method of this
Equality instance
An
Equality[T]that offers ahashCodeFormethod that can provide anInthash code for a givenTinstance, whose contract is constrainted by that ofareEqual.The general contract of
hashCodeForis:- Whenever
hashCodeForis passed on the same object more than once during an execution an application,hashCodeFormust consistently return the same integer, provided no information used inareEqualcomparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.- If two objects are equal according to the
areEqualmethod, then passing either of those objects to thehashCodeFormethod must produce the same integer result.- It is not required that if two objects are unequal according to the
areEqualmethod, then calling thehashCodeFormethod on each of the two objects must produce distinct integer results. However, you should be aware that producing distinct integer results for unequal objects may improve the performance of hashtables.Trait
HashingEqualityis used by instances ofEquaPath#EquaSetto implement hash sets based on custom equalities.