[Issue 2730] Restriction on op= can be lifted

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=2730


smjg at iname.com changed:

           What    |Removed                     |Added
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                 CC|                            |smjg at iname.com




------- Comment #1 from smjg at iname.com  2009-03-20 20:10 -------
opIndexAssign will always be needed for something.  Library implementations of
AAs and bit arrays are an example.

There should be probably be a choice of defining opIndexAssign or defining
opIndex with a ref return.  opIndexAssign could even work for the example code,
if s[i] += 4 were rewritten as s[i] = s[i] + 4 (with i being evaluated only
once) and then expanded into op functions.

The tricky bit is deciding on the logic to use if both are defined....


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