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Regex Help

by Anonymous Monk
on Mar 28, 2013 at 05:20 UTC ( [id://1025853]=perlquestion: print w/replies, xml ) Need Help??

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

Hiya Monks,

How can I delete the last digit part from a line. For example,

$line= "piratesofcareebian100"; $line= "pirates of careebian100"; $line= "pirates of careebian 100";

I only need from "pirates" upto "careebian".

How can I have only the alphabet part and delete the digit part using a regex.

Thank you.

Replies are listed 'Best First'.
Re: Regex Help
by 2teez (Vicar) on Mar 28, 2013 at 05:42 UTC

    How would you write it?
    Try something like so:

    use strict; use warnings; while(<DATA>){ chomp; print $1,$/ if/(\D+?)\d+?/; } __DATA__ piratesofcareebian100 pirates of careebian100 pirates of careebian 100
    Please also check these documentation perlre, perlrequick and perlretut

    If you tell me, I'll forget.
    If you show me, I'll remember.
    if you involve me, I'll understand.
    --- Author unknown to me
      Thanks 2teez, Now I have 1 more doubt. pls can u? If the data is like below, how we can do it?
      $line = "pirates1 of careebian 100"; $line = "pirates2 of careebian 100"; $line = "pirates3 of careebian 100";
      and I need the output as "pirates1 of careebian" & "pirates2 of careebian" & "pirates3 of careebian"

        then change this print $1,$/ if/(\D+?)\d+?/;
        to
        this print $1,$/ if/(.+?)\s+?\d+?/;

        UPDATE:
        In case, you have all these data in the same file you can try this:

        use strict; use warnings; while(<DATA>){ chomp; print $1,$/ if/(.+?)(\s+)?\d+?$/; } __DATA__ piratesofcareebian100 pirates of careebian100 pirates of careebian 100 pirates1 of careebian 100 pirates2 of careebian 100 pirates3 of careebian 100

        Output
        piratesofcareebian pirates of careebian pirates of careebian pirates1 of careebian pirates2 of careebian pirates3 of careebian
        Please, check the reference I mentioned in my first post on this thread.
        Hope that helps

        If you tell me, I'll forget.
        If you show me, I'll remember.
        if you involve me, I'll understand.
        --- Author unknown to me

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