in reply to regex question Underscores, lines and paratheses.

I want to a regex which is able to match a-zA-Z0-9_- and parantheses.

SSCCE:

use strict;
use warnings;

use Test::More;

my @good = (
    'a',
    '321',
    '(321)',
    'a(321-)_HGF'
);

my @bad = (
    '"@$',
    '~',
    '[{'
);

my $re = qr/^[a-zA-Z0-9_()-]+$/;

plan tests => @good + @bad;

for my $str (@good) {
    like ($str, $re, "$str matched");
}
for my $str (@bad) {
    unlike ($str, $re, "$str not matched");
}

[download]

See also How to ask better questions using Test::More and sample data

Replies are listed 'Best First'.
Re^2: regex question Underscores, lines and parentheses.
by Aldebaran (Curate) on May 07, 2019 at 17:10 UTC

    This seems to be such an elegant little script for dealing with character classes but also the hyphen. I replicated it and save such scripts for the rainy day when I wonder how to do exactly this. I changed the data slightly to satisfy myself that that hyphen matched.

    $ ./1.hippo_regex.pl 
1..7
ok 1 - a matched
ok 2 - - matched
ok 3 - (321) matched
ok 4 - a(321-)_HGF matched
ok 5 - "@$ not matched
ok 6 - ~ not matched
ok 7 - [{ not matched

    [download]

    Source:

    #!/usr/bin/perl -w
use 5.011;
use Test::More;

my @good = (
    'a',
    '-',
    '(321)',
    'a(321-)_HGF'
);

my @bad = (
    '"@$',
    '~',
    '[{'
);

my $re = qr/^[a-zA-Z0-9_()-]+$/;

plan tests => @good + @bad;

for my $str (@good) {
    like ($str, $re, "$str matched");
}
for my $str (@bad) {
    unlike ($str, $re, "$str not matched");
}

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