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java.lang.Object org.apache.commons.functor.core.collection.IsElementOf<L,R>
public final class IsElementOf<L,R>
A BinaryPredicate
that checks to see if the
specified object is an element of the specified
Collection.
Constructor Summary | |
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IsElementOf()
Create a new IsElementOf. |
Method Summary | ||
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boolean |
equals(Object obj)
Indicates whether some other object is "equal to" this functor. |
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int |
hashCode()
Returns a hash code for this functor adhering to the general Object.hashCode contract. |
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static IsElementOf<Object,Object> |
instance()
Get an IsElementOf instance. |
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static
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instance(Object obj)
Get an IsElementOf(collection|array) UnaryPredicate. |
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boolean |
test(L obj,
R col)
Evaluate this predicate. |
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String |
toString()
Returns a human readable description of this functor. |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public IsElementOf()
Method Detail |
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public boolean test(L obj, R col)
test
in interface BinaryPredicate<L,R>
obj
- the L element of the ordered pair of argumentscol
- the R element of the ordered pair of arguments
public boolean equals(Object obj)
Object.equals
contract.
Additionally, this method can return
true only if the specified Object implements
the same functor interface and is known to produce the same
results and/or side-effects for the same arguments (if any).
While implementators are strongly encouraged to override
the default Object implementation of this method,
note that the default Object implementation
does in fact adhere to the functor equals
contract.
equals
in interface Functor
equals
in class Object
obj
- the object to compare this functor to
true
iff the given object implements
this functor interface, and is known to produce the same
results and/or side-effects for the same arguments
(if any).Functor.hashCode()
public int hashCode()
Object.hashCode
contract.
Implementators are strongly encouraged but not
strictly required to override the default Object
implementation of this method.
hashCode
in interface Functor
hashCode
in class Object
Functor.equals(java.lang.Object)
public String toString()
Object
implementation of this method.
toString
in interface Functor
toString
in class Object
public static IsElementOf<Object,Object> instance()
public static <A> UnaryPredicate<A> instance(Object obj)
obj
- collection/array to search
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