closureinclosuretest.groovy

来自「大名鼎鼎的java动态脚本语言。已经通过了sun的认证」· GROOVY 代码 · 共 29 行

/**
 * Bug illustrating the nested closures variable scope visibility issue.
 * l.each is ClosureInClosureBug$1 and it.each is ClosureInClosureBug$2
 * The variable text is not visible from ClosureInClosureBug$2.
 * Indeed, a closure can only see the variable defined outside this closure (one level up)
 * but cannot see what's in the second level.
 *
 * In order to make the test work, do not forget to uncomment the line "println(text)"
 *
 * @authour Guillaume Laforge
 */
class ClosureInClosureTest extends GroovyTestCase {
	void testInvisibleVariable() {
		def text = "test "

		def l = [1..11, 2..12, 3..13, 4..14]

		l.each{
			it.each{
			    println(text)
			}
		}
	}

	static void main(args) {
		def bug = new ClosureInClosureTest()
		bug.testInvisibleVariable()
	}
}