Convert to string an enum item

[tcak via Digitalmars-d-learn]

[code]
import std.stdio;
import std.conv;

enum Values: ubyte{ One = 1, Two = 2 }
void main(){
        writeln( std.conv.to!string( Values.One ) );
}
[/code]

Output is "One".

casting works, but to be able to cast correctly, I need to tell 
compiler that it is "ubyte".

Isn't there any NON-HACKISH solution to print out the value of 
enum item? And do not decrease the performance as well please. It 
runs on web server.


Problem comes from that:
I have written a struct for JsonArray. It has multiple append 
methods. One of them is "appendNumber".

public ref JsonArray appendNumber(N)( N num )
if( __traits( compiles, {auto x=num.min + num.max;} ) || 
__traits( compiles, {auto x=num.min_normal;} ) )
{
        appendJSString( std.conv.to!string( num ) );
        return this;
}

While I am passing an enum item to this function, as it has "min" 
and "max" attributes, it is accepted. But the resulting string is 
the name of enum item instead of its value. I do not want casting 
while enum knows its type already.