in reply to Re: $_ works, $my_variable doesn't?
in thread $_ works, $my_variable doesn't?

Better would be $one_line =~ /[AaEeIiOoUu]/. There's no need to make the entire string case-insensitive - it's slower. Also, you're not doing alternation, but instead doing a character class match. Again, faster.

------
We are the carpenters and bricklayers of the Information Age.

Then there are Damian modules.... *sigh* ... that's not about being less-lazy -- that's about being on some really good drugs -- you know, there is no spoon. - flyingmoose

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Re: Re: Re: $_ works, $my_variable doesn't?
by bageler (Hermit) on Mar 30, 2004 at 03:54 UTC
    When using a range it's an OR operation, not an AND, so that will also match aaaaa eeeeee iiiiiiii, etc. I don't think that's what he was looking for. revdiablo has a good explanation.
[reply]
      my @strings = qw(
    aaaaa
    eeeee
    iiiii
    abcde
    aeiou
    bdfhj
);

my %regexes = (
    alternation => qr/a|A|e|E|i|I|o|O|u|U/,
    class       => qr/[AaEeIiOoUu]/
);

foreach my $string (@strings)
{
    print "$string:\n";
    while (my ($k, $r) = each %regexes)
    {
        print "\t$k - " . ($string =~ /$r/ ? 'YES' : 'NO') . $/;
    }
}
---------------
aaaaa:
        alternation - YES
        class - YES
eeeee:
        alternation - YES
        class - YES
iiiii:
        alternation - YES
        class - YES
abcde:
        alternation - YES
        class - YES
aeiou:
        alternation - YES
        class - YES
bdfhj:
        alternation - NO
        class - NO

      [download]

      Please give me a counter-case. As far as I can tell, the two regexes are identical, save that the alternation one is slower.

      ------
      We are the carpenters and bricklayers of the Information Age.

      Then there are Damian modules.... *sigh* ... that's not about being less-lazy -- that's about being on some really good drugs -- you know, there is no spoon. - flyingmoose

[reply]
[d/l]
        The OP was looking for strings that contain all of the vowels. Your code doesn't do that.

        duff

[reply]

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