[Issue 11591] `std.typecons.Tuple`-s with classes fails at runtime as associative array keys

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=11591



--- Comment #4 from Walter Bright <bugzilla at digitalmars.com> 2013-12-31 18:53:04 PST ---
I did some more digging on this. The fundamental problem is that for AA's to
work, then opCmp() has to work. opCmp needs an ordering, a "<" operation. But
there is no defined ordering for Object.

Hence, it fails.

I don't see how const makes any difference. Nor is this really about Tuples,
it's about using Object as a key for an associative array.

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