import std.stdio;
import std.conv;

auto makeType(T, string X)()
{
    mixin("enum makeTypeTemp" ~ " : " ~ "T" ~  " { " ~ X ~ " }");
    makeTypeTemp temp;
    return temp;
}

template choice(T, string X)
{
    alias typeof({ auto x = makeType!(T, X); return x; }()) choice;
}

alias choice!(bool, "yes, no") Redraw;
alias choice!(int, "red, green, blue") Color;

void paint(Redraw redraw, Color color = Color.blue)
{
    if (redraw == Redraw.yes)
    {
        writefln("Painting %s pixels.", to!string(color));
    }
    else
    {
        writefln("Not painting %s pixels.", to!string(color));
    }
}

void main()
{
    paint(Redraw.yes);
    paint(Redraw.no, Color.red);
}