Can't print enum values

[Andrey]

On Thursday, 30 August 2018 at 11:09:40 UTC, vit wrote:
> args are runtime arguments.
>
> import std.experimental.all;
>
> enum MyEnum : string
> {
>     First = "F_i_r_s_t",
>     Second = "S_e_c_o_n_d"
> }
>
> ///alias QW(alias arg) = 
> Alias!(cast(OriginalType!(typeof(arg)))arg);
> auto QW(T)(const auto ref T x){
> 	return cast(OriginalType!T)x;
> }
>
> void print(T...)(T args)
> {
>     writeln(cast(OriginalType!(typeof(args[0])))args[0]); // 
> Works...
>     ///writeln(QW!(args[0]));                                // 
> Doesn't work... MUST!
>     writeln(QW(args[0]));
>
>     static foreach(alias arg; args){
>         static if(is(typeof(arg) : MyEnum))write(QW(arg));
>     	else write(arg);
>     }
>     write('\n');
>     //writeln(staticMap!(QW, args));                        // 
> Doesn't work... MUST!
> }
>
> void main()
> {
>     bool runTimeBool = true;
>     print(MyEnum.First, 7, runTimeBool, MyEnum.Second);
> }

I want to create a reusable template for this purpose.
Why I can't use "staticMap" so that compiler it self would do 
this:
>void print(T...)(T args)
>{
>    writeln(cast(OriginalType!(typeof(args[0])))args[0], 
> cast(OriginalType!(typeof(args[1])))args[1], 
> cast(OriginalType!(typeof(args[2])))args[2], 
> cast(OriginalType!(typeof(args[3])))args[3]);
>}
Just wrap some some symbol "args" with some expression at compile 
time.

It is the same as in C++:
>template<Args...>
>void print(Args ...args)
>{
>    writeln(UnderlyingType(args)...); // UnderlyingType is a 
> function here
>}