[IronPython] CallTargetX delegates

[Michael Foord]

Tomas Matousek wrote:
> Func/Action delegates are in System.Core assembly and System namespace in CLR4.
> So you need to import them conditionally based on current .NET version.
>
> If you use IronPython on .NET 3.5 you'll get 2 different Func/Action delegate sets - one in [Microsoft.Scripting]Microsoft.Scripting.Utils and the other in [System.Core]System.
> It shouldn't matter much which ones do you use. 
>
>   

So if you want to support running on .NET 2, 3 & 4 it's a bit of a mess. 
:-) Sure glad CallTarget0 is sticking around...

Michael

> Tomas
>
> -----Original Message-----
> From: users-bounces at lists.ironpython.com [mailto:users-bounces at lists.ironpython.com] On Behalf Of Michael Foord
> Sent: Monday, September 14, 2009 1:19 PM
> To: Discussion of IronPython
> Subject: Re: [IronPython] CallTargetX delegates
>
> 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
>>
>>  
>>
>>  
>>
>>
>>
>>  
>>
>> *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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