Scott David Daniels wrote: > Delaney, Timothy (Tim) wrote: >> Plus copy-on-write isn't something you want in general - it's *much* >> slower since it needs to copy the internal data every time it's >> modified. The vast majority of uses of data structures does not >> involve concurrent modification. > > But copy-on-write in the presence of reference counts doesn't do the > mad useless-copy stuff.
Good point - if there's only one reference, there's no need for copying - this is definitely something that could be taken advantage of. Tim Delaney -- http://mail.python.org/mailman/listinfo/python-list
