[Issue 16947] std.digest should work for output ranges

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16947

--- Comment #2 from lempiji at gmail.com ---
Thanks for the response.
I understand that this is a rare request.

I reported that it would be should to accept a general OutputRange, but I think
that it is a low priority problem.

I would like to make a pull request when improvement is needed.

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