From: Beman Dawes (bdawes_at_[hidden])
Date: 2001-06-22 18:40:27
At 06:40 PM 6/22/2001, Greg Colvin wrote:
>The safe rule is not to use leading underscores, although I
>think those above are technically OK, if useless.
Why? Lots of programmers (me included) use a single leading underscore in
private member names. It never causes any problems, and is completely
That choice was based in an experiment some years ago trying several
candidates (including none, trailing underscore, and some others I can't
remember.) Leading underscore won.
>220.127.116.11.2 Global names [lib.global.names]
>1 Certain sets of names and function signatures are always reserved to
> the implementation:
> --Each name that contains a double underscore __) or begins with an
> underscore followed by an uppercase letter (_lex.key_) is reserved
> to the implementation for any use.
> --Each name that begins with an underscore is reserved to the imple-
> mentation for use as a name in the global namespace.22)
> 22) Such names are also reserved in namespace ::std (_lib.re-
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