Groovy for Domain-specific Languages - Second Edition

Chapter 7

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The following result is a quick and nasty UI for Twitter searching:

Method pointers

Groovy allows you to assign a method to a closure by using the & syntax. The closure
returned is often referred to as a method pointer. Method pointers can be assigned
by dereferencing the method name from any object instance, for example:

given:

def list = ["A", "B", "C"]

when:

def addToList = list.&add

and:

addToList "D"

then:

list == ["A", "B", "C", "D"]