[Pharo-users] catching exceptions

[abdelghani ALIDRA]

Hi everyBody,
I know there is some kind of exceptions handling mechanism  in Pharo but I cant 
exactly  remember where to find it.Actually, I would like to execute specific 
code if atRandomis called on an empty Array or Collection.I probably can still 
override errorEmptyCollection but maybe there is another (less radical) way.And 
by the way, Would it be quicker to use exception handling then just testing the 
Collection before calling atRandom.
Thanks
Abdelghani