LeftIdentity

java.lang.Object
- org.apache.commons.functor.core.LeftIdentity

```
public final class LeftIdentity
extends java.lang.Object
```
Holder class for a left-identity BinaryFunction (evaluates to the left argument) and a left-identity BinaryPredicate (tests whether left Boolean argument equals Boolean.TRUE).

Version:

$Revision$ $Date$

Field Summary

Fields
Modifier and Type	Field	Description
`static BinaryFunction<java.lang.Object,java.lang.Object,java.lang.Object>`	`FUNCTION`	Left-identity function.
`static BinaryPredicate<java.lang.Boolean,java.lang.Object>`	`PREDICATE`	Left-identity predicate.

Constructor Summary

Constructors
Constructor Description

LeftIdentity()
Create a new LeftIdentity (for clients that require an object).

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static <L,R> BinaryFunction<L,R,L>`	`function()`	Get a Left-identity BinaryFunction.
`static <R> BinaryPredicate<java.lang.Boolean,R>`	`predicate()`	Get a left-identity BinaryPredicate.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - FUNCTION
```
public static final BinaryFunction<java.lang.Object,java.lang.Object,java.lang.Object> FUNCTION
```
    Left-identity function.
  - PREDICATE
```
public static final BinaryPredicate<java.lang.Boolean,java.lang.Object> PREDICATE
```
    Left-identity predicate.
- Constructor Detail
  - LeftIdentity
```
public LeftIdentity()
```
    Create a new LeftIdentity (for clients that require an object).
- Method Detail
  - function
```
public static <L,R> BinaryFunction<L,R,L> function()
```
    Get a Left-identity BinaryFunction.
    
    Type Parameters:
    
    L - the left argument type.
    
    R - the right argument type.
    
    Returns:
    
    BinaryFunction
  - predicate
```
public static <R> BinaryPredicate<java.lang.Boolean,R> predicate()
```
    Get a left-identity BinaryPredicate.
    
    Type Parameters:
    
    R - the right argument type.
    
    Returns:
    
    BinaryPredicate