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I was just reading the documentation on grep. I'm familiar with using grep in the Terminal simply to find matches using regular expressions. I am less familiar with how grep behaves in Perl. I just added a line of code to the script I'm working on for the letter banks, and it appears to be doing exactly what I need it to. But I think it would only work if somehow the grep were returning true or false (as opposed to returning the actual string which is a match (or non-match)).

for (sort keys %words) {
  my @list = sort @{$words{$_}};
  next unless @list > 1; 
  next unless grep !/(.).*\1/, @list;
  print "@list\n";
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I'm trying to print @list only if it contains more than one element, AND it has at least one element which contains no repeat letters. This seems to be working, but again, as I see it, the grep command must be returning true or false for it to work.

In reply to Re^5: Anagrams & Letter Banks by dominick_t
in thread Anagrams & Letter Banks by dominick_t

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