[Pharo-users] Dictionary removeKey: very low

Hi all, I have a problem with Dictionaries : dic := Dictionary new: 10000. 1 to: 10000 do:[ :i | dic at: i put: i printString. ]. 1 to: 10000 do:[ :i | dic removeKey: i. ] Removing each keys is very slooow, time execution difference between add and remove is crazy. Any idea for fix that ? Can I use another Dictionary implementation or settings ? Thanks. Pierre