reg 0.8

Generic functions. Clever registries and lookups

Reg: Clever Registries and Lookups

Reg is a Python library that provides generic function support to Python. It help you build powerful registration and configuration APIs for your application, library or framework.

Documentation.

CHANGES

0.8 (2014-08-28)

• Added a @reg.classgeneric. This is like @reg.generic, but the first argument is treated as a class, not as an instance. This makes it possible to replace @classmethod with a generic function too.

• Fix documentation on running documentation tests. For some reason this did not work properly anymore without running sphinxpython explicitly.

• Optimization: improve performance of generic function calls by employing lookup_mapply instead of general mapply, as we only care about passing in the lookup argument when it’s defined, and any other arguments should work as before. Also added a perf.py which is a simple generic function timing script.

0.7 (2014-06-17)

• Python 2.6 compatibility. (Ivo van der Wijk)

• Class maps (and thus generic function lookup) now works with old style classes as well.

• Marked as production/stable now in setup.py.

0.6 (2014-04-08)

• Removed unused code from mapply.py.

• Typo fix in API docs.

0.5 (2014-01-21)

• Make reg.ANY public. Used for predicates that match any value.

0.4 (2014-01-14)

• arginfo has been totally rewritten and is now part of the public API of reg.

0.3 (2014-01-06)

• Experimental Python 3.3 support thanks to the future module.

0.2 (2013-12-19)

• If a generic function implementation defines a lookup argument that argument will be the lookup used to call it.

• Added reg.mapply(). This allows you to call things with more keyword arguments than it accepts, ignoring those extra keyword args.

• A function that returns None is not assumed to fail, so no fallback to the original generic function is triggered anymore.

• An optional precalc facility is made available on Matcher to avoid some recalculation.

• Implement a specific PredicateMatcher that matches a value on predicate.

0.1 (2013-10-28)

• Initial public release.