import std.stdio;
import core.atomic;
import core.thread;
import core.sync.mutex;
import std.datetime.stopwatch;
import std.concurrency;
import std.traits;
import std.random;
import std.algorithm;
import std.conv;

struct Ref{
	string n;
};

struct Print{}

struct E {}

struct A {
    @Print
    int a;

    @Print
    @Ref("a")
	E b;

    @Print
    @Ref("b")
	E c;

    void print() {
        static foreach(i, m; A.tupleof) {{
            static if (hasUDA!(m, Ref)) {
            	immutable auto idx = getUDAs!(m, Ref)[0].n;
            } else {
				immutable auto idx = m.stringof;
            }
            static if (hasUDA!(m, Print)) {
            	mixin("writeln("~idx~");");
            }
        }}
    }

}


void main()
{
    auto a = A(1);
	a.print();
}