Howdy list,
I am tryign to figure the best way to put a regex in a string:
my $regxp = '\w+(\.\d+)?\*\w+';
or
my $regxp = qr(\w+(\.\d+)?\*\w+);
if($foo !~ m/^$regxp$/) { die "you badly formatted thing you"; }
Both ways seem to work the same it's just that qr changes $regxp to:
(?-xism:\w+(\.\d+)?\*\w+)
I'm not familiar with what that is doing? Is the 'i' saying case insensitive
And the 'm' saying multiple lines/match, 'x' extended regular expressions
and the 's' substitute/single line?
Or ???
What are the advantages/disadvantages of either?
Thanks!
Dan
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