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Re: Perl substitution not working

by frozenwithjoy (Curate)
on Jun 21, 2012 at 00:44 UTC ( #977518=note: print w/ replies, xml ) Need Help??


in reply to Perl substitution not working

Well, the good news is that s/,,,/,/g should definitely work. The bad news is that your script is doing something weird. :P A couple things to be aware of:

  • you don't need to make @line an array. You can just write something like foreach my $line (@data).
  • you are using $line for both foreach loops. You are trying to use the same namespace for two different things. Maybe change the second one to foreach my $L1_line split...
  • Disregard this: The actual reason you aren't substituting properly is that you are printing @L1, but that array never gets modified by your substitution which acts on $line.


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Re^2: Perl substitution not working
by muba (Priest) on Jun 21, 2012 at 00:53 UTC

    The actual reason you aren't substituting properly is that you are printing @L1, but that array never gets modified by your substitution which acts on $line.

    Not true:

    my @L1 = qw(Abc aBc abC); for my $line (@L1) { $line =~ s/a/_/i; print "\@L1: <", join(", ", @L1), ">; \$line: <$line>\n"; } __END__ @L1: <_bc, aBc, abC>; $line: <_bc> @L1: <_bc, _Bc, abC>; $line: <_Bc> @L1: <_bc, _Bc, _bC>; $line: <_bC>

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