Thanks Stef. It Seems to be what  I am  looking for.

 Abdelghani


--------------------------------------------
En date de : Jeu 19.11.15, stepharo <steph...@free.fr> a écrit :

 Objet: Re: [Pharo-users] BitField
 À: "abdelghani ALIDRA" <alidran...@yahoo.fr>, "Any question about pharo is 
welcome" <pharo-users@lists.pharo.org>
 Date: Jeudi 19 novembre 2015, 20h57
 
 
     Have a look at the chapter on number in deep into
 pharo.
 
     You get some illustrations of bit operations for
 numbers
 
         bitShift: 
 
         bitAnd: ...
 
     
 
     Stef
 
     
 
     Le 16/11/15
 21:16, abdelghani ALIDRA a
       écrit :
 
     
     
       
         Hi
 everybody,
         
 
         
         I was
           discussing with Thibault about the performance of
 some methods
           defined on sets ( actually quite slow for big
 collections,
           mainly union: and intersection: ) and we were
 wondering if
           there is any implementation of some BitField-like
 class to
           speed up these operations? May be in an external
 project? 
         
 
         
         Abdelghani
       
     
     
 


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