[Issue 15798] std.algorithm.mutation.copy takes target by value

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=15798

Jack Stouffer <jack at jackstouffer.com> changed:

           What    |Removed                     |Added
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                 CC|                            |jack at jackstouffer.com

--- Comment #2 from Jack Stouffer <jack at jackstouffer.com> ---
To be honest, the behavior of copy really only makes sense for array targets.
It doesn't make any sense to return the "remainder" of a generic output range.

copying to non-arrays should be deprecated

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