public static final class Equivalence.Wrapper<T> extends Objectimplements Serializable
equals(Object)
and
hashCode()
delegate to an
Equivalence
.
For example, given an Equivalence
for strings
named equiv
that tests equivalence using their lengths:
equiv.wrap("a").equals(equiv.wrap("b")) // true equiv.wrap("a").equals(equiv.wrap("hello")) // false
Note in particular that an equivalence wrapper is never equal to the object it wraps.
equiv.wrap(obj).equals(obj) // always false
Modifier and Type | Method and Description |
---|---|
boolean |
equals(Object
Returns
true if
Equivalence applied to the wrapped references is
true and both wrappers use the
same equivalence.
|
T |
get()
Returns the (possibly null) reference wrapped by this instance.
|
int |
hashCode()
Returns the result of
Equivalence applied to the wrapped reference.
|
String |
toString()
Returns a string representation for this equivalence wrapper.
|
public T get()
public boolean equals(Objectobj)
true
if
Equivalence.equivalent(Object, Object)
applied to the wrapped references is
true
and both wrappers use the
same
equivalence.
public int hashCode()
Equivalence.hash(Object)
applied to the wrapped reference.
public StringtoString()