Re: Strange - a simple assignment statement shows error in VC++ but works in gcc !
"David Schwartz" <davids@webmaster.com> wrote in message
news:9c88b272-c022-47f0-8f04-1f885b0b861d@j18g2000prm.googlegroups.com...
It would in ours, since our coding standards prohibit implicit
comparisons and specify that the negation operator can only be used on
boolean types. IMO, the two extra characters to make "x!=0" are well
worth it for the improved clarity of the code. For one thing, it makes
it clear that you know that x is an integer.
Zero does not indicate only integers, but x may be nullptr as well:
int* ptr = 0;
ptr = new int(10);
if (0 != ptr)
{
}
However, I agree that explicit 0 != comparison helps sometimes to for
fast recognition that operand is not-a-boolean, but ordinary type,
without checking declaration of variable. Explicit == no need for comments
as it's self-describing style. Personally, I prefer to test
pointers using Zero if (0 != ptr) over if(!ptr).
Best regards,
--
Mateusz Loskot, http://mateusz.loskot.net
Charter Member of OSGeo, http://osgeo.org
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