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Re: Control characters

by tbone1 (Monsignor)
on Jun 05, 2009 at 15:18 UTC ( #768820=note: print w/ replies, xml ) Need Help??


in reply to Control characters

I was going to suggest using regular expressions and the s/// command but the control characters make it rather tricky, since the ^ anchors a search at the beginning of a string. Quick and dirty, but maybe something like this?

s/(.)?^O/\1/g; s/(.)?^N/\1/g;

--
tbone1, YAPS (Yet Another Perl Schlub)
And remember, if he succeeds, so what.
- Chick McGee


Comment on Re: Control characters
Re^2: Control characters
by AnomalousMonk (Monsignor) on Jun 05, 2009 at 16:55 UTC
    s/(.)?^O/\1/g; s/(.)?^N/\1/g;
    But what do these statements really do?
    >perl -wMstrict -le "for my $str (@ARGV) { printf q{%s -> }, $str; $str =~ s/(.)?^O/\1/g; $str =~ s/(.)?^N/\1/g; print $str; } " OhNoOhNo NotOnNotOn \1 better written as $1 at -e line 1. \1 better written as $1 at -e line 1. Use of uninitialized value $1 in substitution iterator at -e line 1. OhNoOhNo -> hNoOhNo Use of uninitialized value $1 in substitution iterator at -e line 1. NotOnNotOn -> otOnNotOn

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