David Murmann wrote: > Hi all! > > I could not find out whether this has been proposed before (there are > too many discussion on join as a sequence method with different > semantics). So, i propose a generalized .join method on all sequences > with these semantics: > > def join(self, seq): > T = type(self) > result = T() > if len(seq): > result = T(seq[0]) > for item in seq[1:]: > result = result + self + T(item) > return result > > This would allow code like the following: > > [0].join([[5], [42, 5], [1, 2, 3], [23]])
I don't like the idea of having to put this on all sequences. If you want this, I'd instead propose it as a function (perhaps builtin, perhaps in some other module). Also, this particular implementation is a bad idea. The repeated += to result is likely to result in O(N**2) behavior. STeVe -- http://mail.python.org/mailman/listinfo/python-list
