[Issue 12815] Dummy file

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=12815

--- Comment #2 from David Nadlinger <code at klickverbot.at> ---
I also needed something like this a while back (also for input, though), so I
agree that having it in Phobos would be nice.

(In reply to Maksim Zholudev from comment #0)
> What about other systems?

NUL should do the trick on Windows, I think.

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