[IronPython] CallTargetX delegates

[Michael Foord]

Tomas Matousek wrote:
>
> We’ve made change recently (last week) on .NET 2.0 you’ll need to use 
> a different namespace and assembly:
>
>  
>
> import clr
>
> clr.AddReference(‘Microsoft.Scripting’)
>
> from Microsoft.Scripting.Utils import Func
>
> Func[object, object](targetCallableHere)
>

Will this work cross-version? (i.e. will it also work on .NET 3 & 4?)

Michael

>  
>
> Tomas
>
>  
>
> *From:* users-bounces at lists.ironpython.com 
> [mailto:users-bounces at lists.ironpython.com] *On Behalf Of *Michael Foord
> *Sent:* Monday, September 14, 2009 11:04 AM
> *To:* Discussion of IronPython
> *Cc:* Discussion of IronPython
> *Subject:* Re: [IronPython] CallTargetX delegates
>
>  
>
>  
>
>  
>
> --
>
> http://www.ironpythoninaction.com
>
>
> On 14 Sep 2009, at 18:59, Dino Viehland <dinov at microsoft.com 
> <mailto:dinov at microsoft.com>> wrote:
>
>     To use Func you just need to do:
>
>      
>
>     import clr
>
>     clr.AddReference(‘System.Core’)
>
>     from System import Func
>
>     Func[object, object](targetCallableHere)
>
>      
>
>     This is equivalent to CallTarget1.  You can add more “object, “ or
>     you can replace object with some other type.
>
>  
>
> It is of course dependent on .NET 3.
>
>  
>
> Michael
>
>  
>
>  
>
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>
>  
>
> *From:* users-bounces at lists.ironpython.com 
> <mailto:users-bounces at lists.ironpython.com> 
> [mailto:users-bounces at lists.ironpython.com] *On Behalf Of *Brian Curtin
> *Sent:* Monday, September 14, 2009 10:53 AM
> *To:* Discussion of IronPython
> *Subject:* Re: [IronPython] CallTargetX delegates
>
>  
>
> How would someone replace CallTargetX with Func<...> within a script? 
> For example, how would you change the Invoke calls in onChanged and 
> onRenamed here: 
> http://www.ironpython.info/index.php/Invoking_onto_the_GUI_%28Control%29_Thread
>
> I've never seen how to use Func within an IP script, just within C#.
>
>
> On Wed, Sep 2, 2009 at 04:59, Davy Mitchell <daftspaniel at gmail.com 
> <mailto:daftspaniel at gmail.com>> wrote:
>
> Could someone pop an example of this on http://www.ironpython.info?
> Sounds like it could be a common 'gotcha' especially for newbies
> running old example code.
>
> Cheers,
> Davy
>
>
> On Wed, Sep 2, 2009 at 6:38 AM, David Escobar<davidescobar at ieee.org 
> <mailto:davidescobar at ieee.org>> wrote:
> > Ok cool. I've used Func<> from C# before. That did the trick. Thanks.
> >
> >
> > On Tue, Sep 1, 2009 at 6:19 PM, Dino Viehland <dinov at microsoft.com 
> <mailto:dinov at microsoft.com>> wrote:
> >>
> >> Yes.  CallTarget’s were really a part of IronPython’s internal calling
> >> convention for used defined functions.  We kept CallTarget0 around 
> because
> >> we knew lots of users had come to depend on that one when they needed a
> >> delegate type.  But we removed all the others and switched to using 
> Func<…>
> >> internally.  Ideally you can switch to using Func<> as well.
> >>
> >>
> >>
> >> From: users-bounces at lists.ironpython.com 
> <mailto:users-bounces at lists.ironpython.com>
> >> [mailto:users-bounces at lists.ironpython.com 
> <mailto:users-bounces at lists.ironpython.com>] On Behalf Of David Escobar
> >> Sent: Tuesday, September 01, 2009 5:41 PM
> >> To: Discussion of IronPython
> >> Subject: [IronPython] CallTargetX delegates
> >>
> >>
> >>
> >> In IronPython 2.6 beta 2, did the CallTargetX delegates get moved to
> >> another module or were they simply removed altogether? The only 
> delegate in
> >> IronPython.Compiler is CallTarget0. I checked IronPython 2.0.2 and 
> it has up
> >> to CallTarget16.
> >
>
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