[Issue 4707] auto ref for foreach loops

d-bugmail at puremagic.com d-bugmail at puremagic.com
Sun Aug 29 21:33:16 PDT 2010


http://d.puremagic.com/issues/show_bug.cgi?id=4707



--- Comment #3 from David Simcha <dsimcha at yahoo.com> 2010-08-29 21:33:04 PDT ---
Another use case for this is if you are iterating over something that may be
expensive to copy.  In these cases, doing foreach(elem; stuff) is inefficient
because it produces an unnecessary copy, but foreach(ref elem; stuff) isn't
generic enough because it won't work on ranges w/o lvalue elements.

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