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doc: clarify check for NULL pointer style

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Our code should be terse and clear.
This commit is contained in:
Luca Barbato
2012-05-04 10:03:42 -07:00
parent fb5c1aaea6
commit e004bc16a1
1 changed files with 4 additions and 0 deletions
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doc/developer.texi
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@ -73,6 +73,10 @@ const char *avfilter_configuration(void)
@} @}
@end example @end example
@item @item
Do not check for NULL values by comparison, @samp{if (p)} and
@samp{if (!p)} are correct; @samp{if (p == NULL)} and @samp{if (p != NULL)}
are not.
@item
In case of a single-statement if, no curly braces are required: In case of a single-statement if, no curly braces are required:
@example @example
if (!pic || !picref) if (!pic || !picref)