NodeReaper has asked for the wisdom of the Perl Monks concerning the following question:

  • Comment on Removing commas and dollar signs from a variable.

Replies are listed 'Best First'.
Re: Removing commas and dollar signs from a variable.
by Albannach (Monsignor) on Dec 21, 2001 at 23:44 UTC
    My choice would be the transliteration operator tr or y: 
    my $money = '$123,456.78';
$money =~ tr/$,//d;
print $money;

    [download]
    Gives: 123456.78

    --
    I'd like to be able to assign to an luser

[reply]
[d/l]
[select]
Re: Removing commas and dollar signs from a variable.
by Rich36 (Chaplain) on Dec 21, 2001 at 23:41 UTC
    This can be done by using substitutions. 
    $var =~ s/\,//g; # Substitute all commas with nothing
$var =~ s/\$//g; # Substitute all dollar signs with nothing

    [download]
    I would suggest checking out the Tutorials section or Learning Perl to learn more about regular expressions.
    Rich36
    There's more than one way to screw it up...
[reply]
[d/l]

      Why use all that regex processing power that you don't need? tr is a much better solution in this case.

      --
      <http://www.dave.org.uk>

      "The first rule of Perl club is you do not talk about Perl club."
      -- Chip Salzenberg

[reply]
        I am missing the benefits/drawbacks of s/// vs. tr/// .
        is it something to truly consider or is it just "more correct" ?

        thanks!
[reply]
        Good point. tr's not something I use much, but probably should. Thanks for the reminder.
        Rich36
        There's more than one way to screw it up...
[reply]

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