On 11 November 2016 at 12:02, stepharo <steph...@free.fr> wrote: > String>>#isIsogram >> | letters | >> letters := Dictionary new. >> self do: [ :x | letters at: x ifAbsent: [] ifPresent: [ ^false ]. >> > Yes I did that one too and I was surprised because it was as slow as the > bag implementation. >
Anyone tried replacing the dictionary with an array of 26 booleans and indexing based on ascii, or even a SmallInteger and bit shifting?
