No problem. ;-)

By the way, solution 1 can be simplified further -
#!/usr/local/bin/perl -w
use strict;

my %letter;
while (<DATA>) {
    print, next if /^\s*$/;
    my $c = substr $_, 0, 1;
    print ":$c:\n" if ! $letter{$c}++;
    print;
}

__DATA__
AA ...
A..

[download]
Hey, didn't you like my second and third solutions? ;-)

In reply to Re: Re: Re: Find by Roger
in thread Creating a text index for a text file by texuser74

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