Haxe-SWC中的可变参数数

嗯,这是一个很好的问题。事实证明,有一种方法可以做到这一点!

大体上 __arguments__ 是闪存目标上的特殊标识符,主要用于访问特殊的局部变量 arguments . 但它也可以用于方法签名,在这种情况下,它会将输出从 test(args: *) 到 test(...__arguments__)

live on Try Haxe ):

class Test {
    static function test(__arguments__:Array<Int>)
    {
        return 'arguments were: ${__arguments__.join(", ")}';
    }
    static function main():Void
    {
        // the haxe typed way
        trace(test([1]));
        trace(test([1,2]));
        trace(test([1,2,3]));

        // using varargs within haxe code as well
        // actually, just `var testm:Dynamic = test` would have worked, but let's not add more hacks here
        var testm = Reflect.makeVarArgs(cast test);  // cast needed because Array<Int> != Array<Dynamic>
        trace(testm([1]));
        trace(testm([1,2]));
        trace(testm([1,2,3]));
    }
}

static protected function test(...__arguments__) : String {
    return "arguments were: " + __arguments__.join(", ");
}