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$num_matches_stuff = $str =~ m/(stuff)/g; @all_the_matches = $str =~ m/(stuff)/g;
In scalar context we get the count of the matches, in array context we get the matches.
No, the former just is not right. You haven't actually tried it, have you?
$str = "stuff stuff stuff"; $num_matches_stuff = $str =~ m/(stuff)/g; print $num_matches_stuff;
Result:
1

The /g modifier in scalar context is very special. It is intended to be used in a loop, something like this:

$str = "stuff stuff stuff"; while($str =~ m/(stuff)/g) { print "Got one!\n"; }
Result:
Got one!
Got one!
Got one!
So in scalar context, it will match at most once at a time — next time around, it'll continue where it left off last time.

Therefore, the returned valued of //g when used in scalar context is either 0, or 1.


In reply to Re: Perl Idioms Explained - @ary = $str =~ m/(stuff)/g by bart
in thread Perl Idioms Explained - @ary = $str =~ m/(stuff)/g by tachyon

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