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Re: using bits to print part of a string

by thundergnat (Deacon)
on Mar 15, 2013 at 16:15 UTC ( #1023732=note: print w/ replies, xml ) Need Help??


in reply to using bits to print part of a string

Construct an array of offsets and use substr to delete the unwanted parts.

Update: ... as BrowserUK already suggested....

use warnings; use strict; #use Data::Dumper; my $mask = '0001111111001111001111111'; my @mask; while ( $mask =~ /0+/g ) { push @mask, [ $-[0], ( $+[0] - $-[0] ) ]; } #print Dumper \@mask; #print $mask,"\n"; while (my $string = <DATA>){ #print $string; chomp $string; for (1..@mask){ my $replace = ''; #'*' x $mask[-$_][1]; #check to see substr $string, $mask[-$_][0], $mask[-$_][1], $replace; } print $string, "\n"; } __DATA__ 0123456789abcdefghijklmnopqrstuvwxyz 0121012102??????????12121212???????? 0111011102??????????12111112???????? 0111011102??????????12111112????????
Output:
3456789cdefijklmnopqrstuvwxyz 1012102??????12121212???????? 1011102??????12111112???????? 1011102??????12111112????????


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