Package: org.codehaus.groovy.runtime

## [Java] Class ComposedClosure<V>

- org.codehaus.groovy.runtime.ComposedClosure

- A wrapper for Closure to support composition. Normally used only internally through the `rightShift()` and `leftShift()` methods on `Closure`.

  Typical usages:

       def twice = { a -> a * 2 }
       def inc = { b -> b + 1 }
       def f = { x -> twice(inc(x)) } // longhand
       def g = inc >> twice
       def h = twice << inc
       assert f(10) == 22
       assert g(10) == 22
       assert h(10) == 22

       def s2c = { it.chars[0] }
       def p = Integer.&toHexString >> s2c >> Character.&toUpperCase
       assert p(15) == 'F'

       def multiply = { a, b -> a * b }
       def identity = { a -> [a, a] }
       def sq = identity >> multiply
       assert (1..5).collect{ sq(it) } == [1, 4, 9, 16, 25]

       def add3 = { a, b, c -> a + b + c }
       def add2plus10 = add3.curry(10)
       def multBoth = { a, b, c -> [a*c, b*c] }
       def twiceBoth = multBoth.rcurry(2)
       def twiceBothPlus10 = twiceBoth >> add2plus10
       assert twiceBothPlus10(5, 10) == 40

  Authors:
    Paul King

- - Inherited fields
    Fields inherited from class | Fields
    --- | ---
    `class Closure` | `DELEGATE_FIRST, DELEGATE_ONLY, DONE, IDENTITY, OWNER_FIRST, OWNER_ONLY, SKIP, TO_SELF, maximumNumberOfParameters, parameterTypes`

  - ### Constructor Summary

    Constructors
    Constructor and description
    `ComposedClosure (Closure first, Closure<V> second)`

  - ### Methods Summary

    Methods
    Type Params | Return Type | Name and description
    --- | --- | ---
    `` | `V` | `call(Object... args)`
    `` | `Object` | `clone()`
    `` | `Object` | `doCall(Object... args)`
    `` | `Object` | `getDelegate()`
    `` | `Class[]` | `getParameterTypes()`
    `` | `int` | `getResolveStrategy()`
    `` | `void` | `setDelegate(Object delegate)`
    `` | `void` | `setResolveStrategy(int resolveStrategy)`

  - ### Inherited Methods Summary

    Inherited Methods
    Methods inherited from class | Name
    --- | ---

    `class Closure`

    `asWritable, call, call, call, clone, curry, curry, dehydrate, getDelegate, getDirective, getMaximumNumberOfParameters, getOwner, getParameterTypes, getProperty, getResolveStrategy, getThisObject, isCase, leftShift, leftShift, memoize, memoizeAtLeast, memoizeAtMost, memoizeBetween, ncurry, ncurry, rcurry, rcurry, rehydrate, rightShift, run, setDelegate, setDirective, setProperty, setResolveStrategy, throwRuntimeException, trampoline, trampoline`

    `class GroovyObjectSupport` | `getMetaClass, getProperty, invokeMethod, setMetaClass, setProperty`
    `class Object` | `equals, toString, hashCode, getClass, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### public ComposedClosure(Closure first, Closure<V> second)

  - ### Method Detail

    - #### @Override public V call(Object... args)

    - #### public Object clone()

    - #### public Object doCall(Object... args)

    - #### public Object getDelegate()

    - #### public Class[] getParameterTypes()

    - #### public int getResolveStrategy()

    - #### public void setDelegate(Object delegate)

    - #### public void setResolveStrategy(int resolveStrategy)