Python

Generic Functions have Landed (Python)

A semi-stable generic function API for Python.

Somewhere between CLOS style OOP and AOP, I'd say.

I don't have the time to explore this, but other might wnat to give it a go and report their experience.

Cache decorator in python 2.4

Yet another simple example of decorators in Pyhton (via Daily Python-URL).

A simple equation solver using attribute access and introspection

A nice hack which makes use of several language features to create a fun programming experience (or "user inteface" if you want).

GvR: Rejecting the J2 decorators proposal

Yet another example of language design in action. The specific issues Guido is concerned about are perhaps of less importance than this concluding remark,

A warning: some people have shown examples of extreme uses of decorators. I've seen decorators proposed for argument and return type annotations, and even one that used a decorator to create an object that did a regular expression substitution. Those uses are cute, but I recommend being conservative when deciding between using a decorator or some other approach, especially in code that will see a large audience (like 3rd party library packages). Using decorators for type annotations in particular looks tedious, and this particular application is so important that I expect Python 3000 will have optional type declarations integrated into the argument list.

Python Decorators

A short and accessible explanation of decorators (new in Pyton 2.4). [via Keith]

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