上下文内容

array = [1, 2, 3]array.with {    add(5)    PRintln delegate // [1, 2, 3, 5]    remove(1)    println delegate // [1, 3, 5]}2、设置delegate实现上下文。
def withClosure(closure) {	array = [1, 2, 3]	closure.delegate = array	closure()}withClosure {    add(5)    println delegate // [1, 2, 3, 5]    remove(1)    println delegate // [1, 3, 5]}3、方法可以省略括号
def withClosure(closure) {    array = [1, 2, 3]    closure.delegate = array    closure()}withClosure {    add 5    println delegate // [1, 2, 3, 5]    remove 1    println delegate // [1, 3, 5]    remove 1    println delegate // [1, 5]}