On Fri, Dec 05, 2008 at 12:35:31AM -0800, Garrett Cooper wrote:
> On Thu, Dec 4, 2008 at 11:22 PM, Ed Schouten <[EMAIL PROTECTED]> wrote:
> > * Maksim Yevmenkin <[EMAIL PROTECTED]> wrote:
> >> the idea was to ensure that kbd->kb_locked variable only takes values
> >> 0 (zero) and 1 (one).
> >
> > I often use constructs like these to do that:
> >
> > foo = bar ? 1 : 0;
> >
> > Maybe !!bar is a lot shorter to write, I think the line above is a lot
> > easier to read.
>
> Indeed. I had no idea (and I would assume that many people wouldn't in
> my similar level of systems programming) what in the work you were
> trying to do above with that line. The one-line conditional is
> universal in almost all major high-level language dialects I've hit,
> minus Python and Tcl.
> -Garrett
The !!bar construction to map {0, not-0} to {0,1} is fairly common in C
programming, and I would certainly expect any experienced C programmer to
recognize it.
--
<Insert your favourite quote here.>
Erik Trulsson
[EMAIL PROTECTED]
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