groovy-core/src/test/groovy/script/ScriptWithFunctions.groovy - groovy - Git at Google

 def foo(list, value) {
     println "Calling function foo() with param ${value}"
     list << value
 }

 x = []
 foo(x, 1)
 foo(x, 2)
 assert x == [1, 2]

 println "Creating list ${x}"
	def foo(list, value) {
	println "Calling function foo() with param ${value}"
	list << value
	}

	x = []
	foo(x, 1)
	foo(x, 2)
	assert x == [1, 2]

	println "Creating list ${x}"