How to convert int type to string "int" ?

[bioinfornatics via Digitalmars-d-learn]

I bam close to be done

import std.stdio;
import std.typecons;
import std.conv;

struct Coord
{
      int x;
      int y;
      int z;
}

template toTuple(T){
      static string maker(){
          string statement = "alias Tuple!(";
          foreach(const memberName; __traits(allMembers, T)){
              statement ~=  typeof(__traits(getMember, T,
memberName)).stringof  ~ ",\"" ~ memberName ~ "\", " ;
          }
          statement = statement[0..$-2] ~ ") toTuple;" ; // $-1 to
remove extra comma
          return statement;
      }
      pragma( msg, maker() );
      mixin( maker() );
}

void main()
{
      //auto a = c.tupleof;
      auto a = toTuple!Coord;
}



$ ldc2 -w -of"testTupleof" "testTupleof.d"
alias Tuple!(int,"x", int,"y", int,"z") toTuple;
testTupleof.d(29): Error: type Tuple!(int, "x", int, "y", int,
"z") has no value