[Python-3000] Fwd: Conventions for annotation consumers (original) (raw)

Ron Adam rrr at ronadam.com
Sun Aug 20 00:27:06 CEST 2006

Paul Prescod wrote:

On 8/19/06, Ron Adam <rrr at ronadam.com <mailto:rrr at ronadam.com>> wrote:

@callmeta def foo( a: [ SetDoc("frobination count"), InRange(3,9) ], b: InSet([4,8,12]) ) -> IsNumber: # code

What extra information or value does the callmeta decorator provide? For the sake of argument, I'll presume it has some useful function. Even so, it doesn't make sense to explictly attach it to every function.

The callmeta decorator wouldn't provide any extra information itself, all it does is decorate(wrap) the functions so that the meta data gets called. It activates the meta data calls.

Imagine a hundred such functions in a module. Would it be better to do this:

@callmeta def func1(..): ... @callmeta def func2(..): ... @callmeta def func3(..): ... @callmeta def func4(..): ... @callmeta def func5(..): ...

Isn't this the same?

Or to do this:

func1(...):... func2(...):... func3(...):... func4(...):... func5(...):... callmeta()

So here callmeta() wraps all the functions to activate the meta data? That should also work if you want to activate all the functions or a large list of functions with meta data. It could just skip those without callable meta data.

Paul Prescod

More information about the Python-3000 mailing list