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in reply to Illegal character CTRLCHAR code 27

ultranerds,

You have 108 writeups here at perlmonks - you still don't know how to write a regex/substitution to remove a character from a string? Or if you don't remember how to do it, you don't know how to find the documentation that explains it?

Then let me point you at http://perldoc.perl.org/ and hope that you bookmark and/or remember the address.

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Re^2: Illegal character CTRLCHAR code 27
by ultranerds (Hermit) on May 03, 2010 at 09:19 UTC
    Hi,

    I know how to remove a charachter, but wasn't sure what to use for the control charachter (as I've never had to do that)

    This seems to do the trick though:

    $user->{$col} =~ tr/\000-\037/ /;

    Cheers

    Andy
[reply]
      I think you're not testing your code properly: 
      $ perl -wE '$_="\01\02"; say length; tr/\000-\007//; say length'
2
2

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      Nothing removed. (Update: But replaced, see Re^5: Illegal character CTRLCHAR code 27) Still you're on the right track. For deleting with tr///, you need a trailing /d: 

      $ perl -wE '$_="\01\02"; say length; tr/\000-\007//d; say length'
2
0

      [download]
      Perl 6 - links to (nearly) everything that is Perl 6.
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[d/l]
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        Ah ok - thanks for the heads up - have updated my code :) (weird though, as it seemed to get rid of that error I reported in my first post, even without the /d ?)

        Cheers

        Andy
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