[Issue 14478] isInputRange failed to recognize some ranges

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14478

Martin Nowak <code at dawg.eu> changed:

           What    |Removed                     |Added
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                 CC|                            |code at dawg.eu

--- Comment #11 from Martin Nowak <code at dawg.eu> ---
> I've seen plenty of cases in code where something like
>
> auto value = range.front;

Algorithms shouldn't needlessly copy values because it might be expensive, e.g.
with big values.
We should probably add an isCopyable!(ElementType!R) to the algorithms that do
require this.

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