[Issue 8087] Improve clarity of std.algorithm documentation

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=8087

--- Comment #3 from hsteoh at quickfur.ath.cx ---
Now that sig constraints are included in ddoc's output, is (1) still an issue?
The declaration of std.algorithm.copy is now:

Range2 copy(Range1, Range2)(Range1 source, Range2 target) if
(isInputRange!Range1 && isOutputRange!(Range2, ElementType!Range1));

(2) and (3) have been addressed by the PR that merged.

--