On Tue, 31 Jul 2001, Christiam Camacho wrote:
> Is the only difference between "and" and "&&" and
> "or" and "||" the precedence of the operators?
> In other words, how do these statements differ (e.g.:
> is any more efficient than the other?):
>
> open(FH,$in_file) or die "Couldn't open $in_file: $!"
> open(FH,$in_file) || die "Couldn't open $in_file: $!"
Consider this:
open FH,$in_file or die "Couldn't open $in_file: $!"
open FH,$in_file || die "Couldn't open $in_file: $!"
There's most definitely a difference here, without the parentheses. The
comma operator has a lower precedence than || (but not or), and it will
change how these statements are evaluated.
-- Brett
http://www.chapelperilous.net/btfwk/
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