I'd probably pick IDynamicMetaObjectProvider as the signifier of a dynamic
type. Ruby and Python types that don't implement this interface aren't "as
dynamic" as types that do -- even built-in ones -- because they won't support
dynamic binding from other languages. And all user-defined types would
implement it.
As a bonus, you can get a list of member names directly from the MetaObject
returned by the IDMOP using something like this:
var idmop = obj as IDynamicMetaObjectProvider;
if (idmop != null) {
var expr = System.Linq.Expressions.Parameter(typeof(object)); // The DLR
version, not the LINQv1 version!
var dmo = idmop.GetMetaObject(expr);
IEnumerable<string> names = dmo.GetDynamicMemberNames();
}
You could then create simple binders and use CallSites directly to actually get
and set the data members yourself -- and the result should support any DLR
language and not just Python or Ruby.
Disclaimer: I haven't tested this, but it should work -- it's the basis for C#
interop in .NET 4.0, after all.
From: [email protected]
[mailto:[email protected]] On Behalf Of Ivan Porto Carrero
Sent: Tuesday, April 28, 2009 12:59 PM
To: [email protected]
Subject: Re: [Ironruby-core] [IronPython] Telling .NET classes from Python
objects
Bignum I'd consider to be a primitive :) but it would be a ruby type
I'm thinking about models / DTO's etc. It's for a databinding context where
you get a list of strings that then need to populate an object. And to pick the
right conversion mechanisms I need a different strategy for a DLR type as for a
CLR type.
On Tue, Apr 28, 2009 at 8:04 PM, Tomas Matousek
<[email protected]<mailto:[email protected]>> wrote:
Would you consider Bignum to be a .NET type or Ruby type?
Tomas
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]<mailto:[email protected]>]
On Behalf Of Dino Viehland
Sent: Tuesday, April 28, 2009 10:41 AM
To: Discussion of IronPython; ironruby-core
Subject: Re: [IronPython] Telling .NET classes from Python objects
Check to see if the object implements IPythonObject.
From:
[email protected]<mailto:[email protected]>
[mailto:[email protected]<mailto:[email protected]>]
On Behalf Of Ivan Porto Carrero
Sent: Tuesday, April 28, 2009 10:38 AM
To: Discussion of IronPython; ironruby-core
Subject: Re: [IronPython] Telling .NET classes from Python objects
+1 for this question only I need it to implement different binding strategies
in IronMVC.
IronRuby in Action (http://manning.com/carrero)
Winston
Churchill<http://www.brainyquote.com/quotes/authors/w/winston_churchill.html>
- "The best argument against democracy is a five-minute conversation with the
average voter."
On Tue, Apr 28, 2009 at 7:35 PM, Michael Foord
<[email protected]<mailto:[email protected]>> wrote:
Hello guys,
I'm continuing my work on generating pi files for the Wing IDE. Actually
everything I encounter will be a .NET type, but in general what is the best way
of telling if an object is a .NET type or a Python type?
Obviously for the primitives it is a moot point - but I'm talking about user
defined classes.
Michael
--
http://www.ironpythoninaction.com/
http://www.voidspace.org.uk/blog
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