def fn(ifElse):
    ifElse.add(lambda it: 90 <= it < 100, lambda it: "优秀")
    ifElse.add(lambda it: 80 <= it < 90, lambda it: "好")
    ifElse.add(lambda it: 70 <= it < 80, lambda it: "良")
    ifElse.add(lambda it: 60 <= it < 70, lambda it: "及格")
    ifElse.addDefault(lambda it: "不及格")


level = _branches.switchCase(85, fn)
_console.log(level)