[IronPython] Re: users-ironpython.com Digest, Vol 2, Issue 3
nbastin at opnet.com
Thu Sep 2 23:23:55 CEST 2004
On Sep 2, 2004, at 5:08 PM, Curt Hagenlocher wrote:
> Nick Bastin <nbastin at opnet.com> writes:
>> On Sep 2, 2004, at 3:10 PM, Randall Burns wrote:
>>> Why can use of static types be done in libraries
>>> specfic to IronPython? That would given IronPython
>>> programs a limited interface using static types to
>>> call DLL's and such -or am I missing something here?
> Well, you have to define a langauage construct before you
> can implement anything at all. It's not a core library vs
> IP-specific library issue.
>> Couldn't we use decorators to create native interfaces to any
>> function we wanted to expose? This would be similar to the use
>> of decorators in pyobjc.
> Yes, decorators could probably serve that purpose. I haven't been
> following CPython since 1.6, but I understand that decorators have
> been added or are being added to an upcoming release. Can you
> decorate parameters, also, or just functions and classes? Ideally,
> you'd want to decorate a parameter with its type, otherwise you're
> back to a syntactical issue.
You decorate a function (in 2.4). You can effectively decorate the
parameters by decorating the function with an appropriate decorator:
def my_func (a, b):
or something like that.
> Can you point to an example in pyobjc? I tried to find something
> on the site, but I got too irritated at their slow-rendering header
> and gave up. From what I remember about ObjC, though, the
> language supports sending messages to objects without knowing
> anything about the object. This is a lot more compatible with
> the Python object model than the C#/VB model, where everything
> is strongly typed.
They don't concern themselves with the type, but the signature is
significant for the selector, so they are planning on using a
decorator. You'll actually have to look at the mailing list, or the
py-dev mailing list to see the syntax, since decorators were just added
to Python 2.4 alpha, and are not a part of the standard pyobjc yet.
More information about the Ironpython-users