There is a neat (and usually quite fast) regex hack for extracting overlapping patterns: 

perl -wMstrict -e
"for my $word (@ARGV) {
  my @bigrams = $word =~ m{ (?= (..) ) }xmsg;
  print qq(bigrams of $word: @bigrams \n)
  }
" foo wibble a be
bigrams of foo: fo oo
bigrams of wibble: wi ib bb bl le
bigrams of a:
bigrams of be: be

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(I think Grandfather is well aware of this hack and did not suggest it because he suspects it is a bit above zanruka's current coefficient of proficiency.)

In reply to Re^2: dice's coefficient by Anonymous Monk
in thread dice's coefficient by locked_user zanruka

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