Using glob is pretty inventive. I like it, except that you generate a really big list*. As long as you're using all 26 letters, the increment operator will give you the list iteratively: 
my $str = 'aaaa';
print $str++, $/ while $str le 'dddd';

[download]
No need to make an array with 26^4 elements!

OK, using increment is fun, so let's be goofy and do it with just [a-d]: 

my $str = 'aaaa';
while ($str le 'dddd') {
    print $str++, $/;
    1 while $str =~ s/(.)e/chr(1 + ord $1) . 'a'/e;
}

[download]

* Update: BrowserUK++ for setting me straight with glob. You learn something new every day here!

blokhead

In reply to Re: Re: creating all possible random 'words' from 4 letters by blokhead
in thread creating all possible random 'words' from 4 letters by Anonymous Monk

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