[Issue 4410] AA has inconsistent and unreasonable requirements for iterating over reference-type index

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4410



--- Comment #3 from Steven Schveighoffer <schveiguy at yahoo.com> 2010-07-02 05:15:40 PDT ---
(In reply to comment #2)
> Obviously, AA keys must be immutable.

Making all array keys immutable is pretty restrictive as well.  I don't want to
see that happening either.  I don't know if you've tried to work with immutable
classes, but they are not that easy.

A recommendation that they be immutable when possible is probably in order. 
But making them const is worse than immutable because it provides no guarantees
and is still as annoying.

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