On Thu, 24 Jan 2002 12:42:15 +0100, ts wrote: >>>>>> "O" == Olivier CARRERE <carrere / artemis.jussieu.fr> writes: > > O> b+="thing" > > This is the same than > > b = b + "thing" Ok, that's why it doesn't work! b+"thing" returns a new object which is affected to b! So '=' creates a reference, and I have to .clone an object to grab a reference to a copy of it?