Issue 3789, stucts equality

[Andrej Mitrovic]

 3/29/12, Andrej Mitrovic <andrej.mitrovich at gmail.com> wrote:
> snip

Crap, lockstep doesn't work on different types, it was iterating over
the arrays. That went over my head. A slightly complicated version
that actually works:

import std.stdio;
import std.conv;

string tupleCompare(int len)()
{
    string result;
    foreach (i; 0 .. len)
    {
        result ~= "
            if (this.tupleof[" ~ to!string(i) ~ "] != t.tupleof[" ~
to!string(i) ~ "])
                return false;
        ";
    }
    return result;
}

template safeOpEquals()
{
    bool opEquals(typeof(this) t)
    {
        enum len = typeof(this).tupleof.length;
        mixin(tupleCompare!len);
        return true;
    }
}