forward.check

JAVA 语言的函数式编程扩展

forward.scala:6: error: forward reference extends over definition of value x
    def f: int = x;
                 ^
forward.scala:10: error: forward reference extends over definition of value x
    def f: int = g;
                 ^
forward.scala:15: error: forward reference extends over definition of variable x
    def f: int = g;
                 ^
three errors found