Three different implementations of a modules which compares strings
so that integer numerical substrings are compared according to their numerical
values. E.g., given the following list:
Sorting using ncmp instead of Python's cmp
would result in the following list:
- A version of the module written using Python's string module.
- A version implemented using the re module.
- A version written in C. Structurally, it mirrors numcompare.py exactly.
It is interesting to compare the speed of the three modules. For the kind
of data I usually sort using this module, numcompare.py is about
twice as quick, or rather half as slow, as regexpnumcompare.py.
The C version is of course very much quicker than both. The morale of the
story being, as always, prototype in Python and reimplement the time
consuming part in C. :)
Last updated 2000-05-04.