[Issue 16990] Ensure that every Phobos function has a unittest

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16990

--- Comment #1 from greenify <greeenify at gmail.com> ---
The tools has been integrated into the tools repo:

https://github.com/dlang/tools/blob/master/styles/has_public_example.d

run with e.g. dub --root=../tools/styles -c has_public_example -i std

Moreover, there's an open PR to Phobos to enable it with a blacklist:

https://github.com/dlang/phobos/pull/4998

It will introduce this as `has_public_example` Makefile target, thus from the
Phobos repo:

make -f posix.mak has_public_example

Help to reduce the blacklist is very welcome!

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