in reply to Re^2: Combining two actions in RegExp
in thread Combining two actions in RegExp

$phone =~ tr/)(/-/d; says to delete the parentheses and also replace the closing paren with '-';

To also delete any spaces, you could use $phone =~ tr/)(\x20/-/d; where '\x20' is the hex value of a 'space'. You could also use $phone =~ tr/)( /-/d; without the hex value of a space and just use a literal space instead. (The hex version just makes the 'space' more explicit).

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Re^4: Combining two actions in RegExp
by Anonymous Monk on Jan 23, 2018 at 21:00 UTC
    Hi, in a situation where the string looks like this one:

     my $phone = "(777) 1234-0000 RAM:007";

    How would remove just the space after the "(777) "?
    The end result would be like:  777-1234-0000 RAM:007

    Thank you!
[reply]
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      One way: 

      c:\@Work\Perl\monks>perl -wMstrict -le
"my $phone = '(777) 1234-0000 RAM:007';
 print qq{'$phone'};
 ;;
 my %xlate = ( '(' => '',  ') ' => '-' );
 ;;
 $phone =~ s{ ([()][ ]?) }{$xlate{$1}}xmsg;
 print qq{'$phone'};
"
'(777) 1234-0000 RAM:007'
'777-1234-0000 RAM:007'

      [download]

      Update 1: I know, I know, the next thing you're going to ask is "how do I handle any number of spaces after the closing paren?" 

      c:\@Work\Perl\monks>perl -wMstrict -le
"my @phones = (
   '(777)1234-0000 RAM:007',   '(777) 1234-0000 RAM:007',
   '(777)  1234-0000 RAM:007', '(777)   1234-0000 RAM:007',
   );
 ;;
 my %xlate = ( '(' => '',  ')' => '-' );
 ;;
 for my $phone (@phones) {
   printf qq{'$phone' -> };
   ;;
   $phone =~ s{ ([()]) \s* }{$xlate{$1}}xmsg;
   print qq{'$phone'};
   }
"
'(777)1234-0000 RAM:007' -> '777-1234-0000 RAM:007'
'(777) 1234-0000 RAM:007' -> '777-1234-0000 RAM:007'
'(777)  1234-0000 RAM:007' -> '777-1234-0000 RAM:007'
'(777)   1234-0000 RAM:007' -> '777-1234-0000 RAM:007'

      [download]

      Update 2: Another version of the substitution that does not depend on a translation table and is more flexible WRT area code format:
          $phone =~ s{ \( \s* (\d{3}) \s* \) \s* }{$1-}xmsg;

      Give a man a fish:  <%-{-{-{-<

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        They all worked! 
        
my %xlate = ( '(' => '',  ') ' => '-' );
$phone =~ s{ ([()][ ]?) }{$xlate{$1}}xmsg;

# OR

$phone =~ s{ \( \s* (\d{3}) \s* \) \s* }{$1-}xmsg;

        [download]
        I need to go back and read on these lines of code, very clever, thank you very much!!
[reply]
[d/l]

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