test "designated inits ideas" {
    const E = enum { a, b, c, d };
    const ss = .{
        .{ .a, 10 },
        .{ .c, 20 },
        .{ .b, 200 },
        .{ .d, 255 },
    };

    inline for (ss) |s| {
        std.debug.warn("s {}\n", .{s});
    }

    const numSs = std.meta.fields(E).len;
    std.debug.warn("numSs {}\n", .{numSs});
    var arr: [numSs]u8 = undefined;
    arr[@enumToInt(E.a)] = 10;
    arr[@enumToInt(E.c)] = 20;
    arr[@enumToInt(E.b)] = 200;
    arr[@enumToInt(E.d)] = 255;

    for (arr) |e, i| {
        std.debug.warn("{}: {}\n", .{ i, e });
    }
}