ComposedClosure (groovy 2.4.0 API)

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	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`	`wait, wait, wait, equals, toString, hashCode, getClass, notify, notifyAll`

- 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)

Summary:
Constructor
Method

| Detail:
Constructor
Method

[Java] Class ComposedClosure<V>

Constructor Summary

Methods Summary

Inherited Methods Summary

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)