Re: Support for multi-position electro-mechanical keylocks

[Marc Balmer <marc%msys.ch@localhost>]

Am 03.08.2009 um 16:58 schrieb Peter Seebach:

> In message <7FA34163-C54B-435C-B147-DA2BBE06F848%msys.ch@localhost>, Marc  
> Balmer writes:
> > Am 03.08.2009 um 16:23 schrieb David Holland:
> >
> > > On Mon, Aug 03, 2009 at 03:45:34AM +0000, David Holland wrote:
> > > > On Sun, Aug 02, 2009 at 11:54:09AM +0200, Marc Balmer wrote:
> > > > > While preparing a hardware workshop and playing with multi- 
> > > > > position
> > > > > keylocks, [...]
> > > > >
> > > > > +       int                     __map[GPIOLOCK_MAXPINS];
> > >
> > > Er. That was supposed to say "why the underscores?"
> >
> > They are in the original code.  So why not?
>
> As a general rule, you shouldn't prefix things with underscores in C.
> (C9x 7.1.3:  "All identifiers that begin with an underscore and
> either an uppercase letter or another underscore are always reserved
> for any use.")

This section applies to identifiers in header files, i.e. to exported  
APIs, not to structure members.


> -s