[Issue 4305] Take, Chain on top of ranges w/o moveFront()

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http://d.puremagic.com/issues/show_bug.cgi?id=4305


Andrei Alexandrescu <andrei at metalanguage.com> changed:

           What    |Removed                     |Added
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                 CC|                            |andrei at metalanguage.com
         AssignedTo|nobody at puremagic.com        |andrei at metalanguage.com


--- Comment #1 from Andrei Alexandrescu <andrei at metalanguage.com> 2010-06-13 20:54:52 PDT ---
The intent is to allow manipulation of ranges that contain types arbitrarily
expensive to copy. The current design requires either front() to yield a ref,
or the range to define moveFront().

I think a better design is to define the module-level std.range.moveFront() to
issue a simple copy when the type being copied does not define this(this). I'll
do so soon. Thanks!

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