[Issue 10009] foreach_reverse and AA.byKey/byValue

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10009


Steven Schveighoffer <schveiguy at yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |schveiguy at yahoo.com


--- Comment #8 from Steven Schveighoffer <schveiguy at yahoo.com> 2013-05-03 14:43:31 PDT ---
The problem I see with removing foreach_reverse is that the compiler actually
rewrites it directly instead of calling a function.  Requiring to use retro
when it is in std.range is not good for modularity.

In addition, foreach_reverse(x..y) is nice to use instead of some combination
of ranges.

However, I don't think foreach_reverse is valid for this use case.  An AA is
only forward-traversable.  foreach_reverse is not possible, as buckets are
stored as singly-linked lists.  If you want that, you need to first capture it
as an array.

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