import std.meta;

import std.format;

​

struct Test { int[3] x; }

​

enum A = Test([1, 3, 4]);

enum A2 = Test([1, 2, 7]);

enum B = Test([5, 6, 7]);

enum C = Test([5, 6, 7]);

enum D = Test([8, 9, 0]);

enum ARRS = AliasSeq!(A, A2, B, C, D);

​

enum TESTER = Test([5, 6, 7]);

​

static foreach (ai, af; ARRS) {

    static foreach (idx, field; af.x) {

        static if (TESTER.x[idx] == af.x[idx]) {

            static if (idx == 0)

                mixin(format("enum Check_%d_0 = %d;", ai, 1));

            else {

                static if (__traits(compiles, mixin(format("Check_%d_%d", ai, idx-1)))) {

                    mixin(format("enum Check_%d_%d = %d;", ai, idx, 1));

                }

            }

        }

    }

    static if (__traits(compiles, FOUND)) {} else {

        static if (__traits(compiles, mixin(format("Check_%d_%d", ai, af.x.length - 1)))) {

            enum FOUND = ai;

        }

    }

}

​

static if (__traits(compiles, FOUND)) {

    pragma(msg, format("entry #%d matches: %s", FOUND, ARRS[FOUND]));

} else {

    static assert(0, "Got no match...");

}

​

void main() {}