Class CurriedClosure<V>

All Implemented Interfaces:
GroovyCallable<V>, GroovyObject,, java.lang.Cloneable, java.lang.Runnable, java.util.concurrent.Callable<V>

public final class CurriedClosure<V>
extends Closure<V>
A wrapper for Closure to support currying. Normally used only internally through the curry(), rcurry() or ncurry() methods on Closure. Typical usages:
 // normal usage
 def unitAdder = { first, second, unit -> "${first + second} $unit" }
 assert unitAdder(10, 15, "minutes") == "25 minutes"
 assert unitAdder.curry(60)(15, "minutes") == "75 minutes"
 def minuteAdder = unitAdder.rcurry("minutes")
 assert minuteAdder(15, 60) == "75 minutes"

 // explicit creation
 import org.codehaus.groovy.runtime.CurriedClosure
 assert new CurriedClosure(unitAdder, 45)(15, "minutes") == "60 minutes"
 assert new CurriedClosure(unitAdder, "six", "ty")("minutes") == "sixty minutes"
  • Caters for Groovy's lazy (rcurry) and eager (ncurry) calculation of argument position
See Also:
Serialized Form
  • Constructor Details

    • CurriedClosure

      public CurriedClosure​(int index, Closure<V> uncurriedClosure, java.lang.Object... arguments)
      Creates the curried closure.
      index - the position where the parameters should be injected (-ve for lazy)
      uncurriedClosure - the closure to be called after the curried parameters are injected
      arguments - the supplied parameters
    • CurriedClosure

      public CurriedClosure​(Closure<V> uncurriedClosure, java.lang.Object... arguments)
  • Method Details