Re: Can't print enum values

[Andrey via Digitalmars-d-learn]

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
}