A critic of Guido's blog on Python's lambda
michele.simionato at gmail.com
Wed May 10 18:17:49 CEST 2006
> "Michele Simionato" <michele.simionato at gmail.com> writes:
> > Ken Tilton wrote:
> > > I was not thinking about the thread issue (of which I know little). The
> > > big deal for Cells is the dynamic bit:
> > >
> > > (let ((*dependent* me))
> > > (funcall (rule me) me))
> > >
> > > Then if a rule forces another cell to recalculate itself, *dependent*
> > > gets rebound and (the fun part) reverts back to the original dependent
> > > as soon as the scope of the let is exited.
> > Python 2.5 has a "with" statement (yes, the name is Lispish on purpose)
> > that could be used to implement this. See
> > http://www.python.org/dev/peps/pep-0343
> You are mistaken. In particular, VAR doesn't have dynamic scope.
I said "it could be used to implement this", and since in a previous
post on mine in this
same thread I have shown how to implement thread local variables in
Python I figured
out people would be able to do the exercise for themselves.
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