[Pharo-users] any ihint how to do this

[Roelof Wobben]

Hello, is there a way I can check if a word has 2 the same chars after each other I was hoping that '#groupby could help me but that one sorts so abba the aa is found  or do I have to use a stream for that could I then also use that stream to check if a word contains 3 vowels ? I ask also on the discord app but no answer for a long time Regards, Roelof