Howard Hinnant 44215f6781 Eschew using directives in headers, even at function scope. ...

* There is still an impact on user code, though I'm not sure
  if by specification or compiler bug.
* Prefer using declarations instead.

2019-05-19 21:53:29 -04:00

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date

Eschew using directives in headers, even at function scope.

2019-05-19 21:53:29 -04:00