Re: regex: extract multiple number of date patterns from certain lines

[Bloodnok]

while (<DATA>) {
    @res = /(\d{4}(?:-\d\d){2}).*dates processed: (.*)/;
    warn "@res";
}

__DATA__
2009-02-02 06:12:57,500 dates processed: 2009-01-31, 2009-01-29, 2009-
+01-30
2009-02-18 06:03:47,713 dates processed: 2009-02-16, 2009-02-17
2009-02-19 05:58:29,138 dates processed: 2009-02-18

returns

2009-02-02 2009-01-31, 2009-01-29, 2009-01-30 at tst.pl line 3, <DATA>
+ line 1.
2009-02-18 2009-02-16, 2009-02-17 at tst.pl line 3, <DATA> line 2.
2009-02-19 2009-02-18 at tst.pl line 3, <DATA> line 3.

Update:

Following a change in requirmeents ;-) ...

use Data::Dumper;
while (<DATA>) {
    @res = map { split } /(\d{4}(?:-\d\d){2}).*dates processed: (.*)/;
    warn Dumper \@res;
}

__DATA__
2009-02-02 06:12:57,500 dates processed: 2009-01-31, 2009-01-29, 2009-
+01-30
2009-02-18 06:03:47,713 dates processed: 2009-02-16, 2009-02-17
2009-02-19 05:58:29,138 dates processed: 2009-02-18

returns

$VAR1 = [
          '2009-02-02',
          '2009-01-31,',
          '2009-01-29,',
          '2009-01-30'
        ];
$VAR1 = [
          '2009-02-18',
          '2009-02-16,',
          '2009-02-17'
        ];
$VAR1 = [
          '2009-02-19',
          '2009-02-18'
        ];

as required (nearly:-D) ??

[Random_Walk]

Nice but I did want to bust all the date values out to separate elements of the @res array. Your non capturing braces though give me the clue I think to fix it properly, but I still can't quite get it:

@res = $_ =~/(\d{4}-\d\d-\d\d).*dates processed: ((:?\d{4}-\d\d-\d\d,?
+ ?)*)/
# still captures last result twice
# input
# 2009-02-02 06:12:57,500 dates processed: 2009-01-31, 2009-01-29, 200
+9-01-30
# output
# 2009-02-02, 2009-01-31, 2009-01-29, 2009-01-30, 2009-01-30

Update

Oeps, I am not splitting them with the above either, fooled myself because my debug testing printed the list out with a join ", ", doh!

Cheers,
R.