9 Nov
2017
9 Nov
'17
12:14 a.m.
Hi art,
> if (flags & DLADM_OPT_PERSIST) {
...
> if ((flags & DLADM_OPT_PERSIST) == 0) {
...
To me, anything non-zero is "true" so the
first is perfectly
acceptable.
It's not what acceptable that matters, but what's idiomatic as that is
instantly familiar to other readers and lets them read code without
being jolted out of concentrating on the important stuff by wondering
why the expression isn't idiomatic, was something else meant instead,
and does it mean the author has dodgy practices.
`if (w & MASK)' is idiomatic.
The original assertion in the discussion was that the
following is not
"right" because of the mixing of bitwise and boolean.
> if ((flags & DLADM_OPT_PERSIST) && (link_flags & DLMGMT_PERSIST)) {
What's the alternative? As the Eskimo C FAQ points out, if you think
if ((w & MASK) != FALSE)
is better then why stop there? Why not
if (((w & MASK) != FALSE) == TRUE)
--
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy