My snippet reads the lines of text from the <DATA> filehandle. You didn't mention where the strings are coming from, so you'll have to adjust accordingly. The regexp needs to be free to match anywhere in the string, so the ^ and $ anchors were hurting you.

my $re = qr{
                (
                    (?: \d{1,2}/ ){2}
                    \d{1,2}
                )
            }x;

while( my $line = <DATA> ) {
    while( $line =~ m/ $re /gx ) {
        print "Line: $.\t Column: ", $-[0], "\tMatched: $1\n";
    }
}


__DATA__
ME170-5/2/8-ME172-2/2/6-ME4028
ME172-2/1/2-ME196-1/1/3-ME4002

[download]

It's up to you to decide what information you would like to push onto an array. Perhaps instead of the print, you could use, push @array, [ $., $-[0], $1 ];

There are a lot of funny looking variables there: $. tells you the line number most recently read from a file. $-[0] tells you the match position of $1. And $1 holds what matched inside the first set of capturing parens within the regular expression.


Dave

In reply to Re: Extract a pattern from a string by davido
in thread Extract a pattern from a string by avim1968

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