On Tue, 12 Feb 2013 16:40:38 -0500 Ned Batchelder <n...@nedbatchelder.com> wrote: > > But the only reason "".join() is a Python idiom in the first place is > because it was "the fast way" to do what everyone initially coded as "s > += ...". Just because we all learned a long time ago that joining was > the fast way to build a string doesn't mean that "".join() is the clean > idiomatic way to do it.
It's idiomatic because strings are immutable (by design, not because of an optimization detail) and therefore concatenation *has* to imply building a new string from scratch. Regards Antoine. _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
