In general, using Perl regex is much better than running substr() multiple times on a single expression.
Where are you using substr()?
My version of Perl does not allow:
my $capture1 = $string, 6, 2, "is stretched"; 
#!/usr/bin/perl
use strict;
use warnings;

my $string = 'This is string';
my $capture1 = $string, 6, 2, "is stretched"; # This will substitute a
+s expected
my $capture2 = $string, 9, 6, 'STRING'; # Now here original string wil
+l be updated and positions I have already are of no use.

__END__
Useless use of a constant (6) in void context at C:\test.pl line 6.
Useless use of a constant (2) in void context at C:\test.pl line 6.
Useless use of a constant ("is stretched") in void context at C:\test.
+pl line 6.
Useless use of a constant (9) in void context at C:\test.pl line 7.
Useless use of a constant (6) in void context at C:test.pl line 7.
Useless use of a constant ("STRING") in void context at C:\test.pl lin
+e 7.

Process completed successfully

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In reply to Re: How to use Substr to bulk substitutions? by Marshall
in thread How to use Substr to bulk substitutions? by phoenix007

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