Got a LiveCode personal license? Are you a beginner, hobbyist or educator that's new to LiveCode? This forum is the place to go for help getting started. Welcome!
I found partially the answer to my question.
It is in the lesson How do I Search an Array?, section <Logarithmic Search> where it is well explained.
Here is the link :http://lessons.runrev.com/s/lessons/m/4 ... h-an-array