Hello,
     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: $!"

Thanks,

Christiam


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