[EMAIL PROTECTED] writes: > > def posmax(seq, key=lambda x:x): > > return max(enumerate(seq), key=lambda k: key(k[1]))[0] > > Is the Python max able to tell that's the identity function? I don't > think so, so your version may be slower and more memory hungry in the > common situation where you don't have a key function. So I think my > version is better :-)
I don't think there will be a noticable memory increase. It's not a DSU situation like in sorting, it's just a small constant parameter. Yes there might be a small speed hit. The compiler in principle could convert the (lambda k: lambda x: k[1]) to something like operator.itemgetter(1), but I doubt that it actually does so. -- http://mail.python.org/mailman/listinfo/python-list
