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Re: Re: pure function with optional number of arguments

  • To: mathgroup at smc.vnet.net
  • Subject: [mg99008] Re: [mg99003] Re: pure function with optional number of arguments
  • From: DrMajorBob <btreat1 at austin.rr.com>
  • Date: Fri, 24 Apr 2009 03:44:36 -0400 (EDT)
  • References: <200904220912.FAA13452@smc.vnet.net> <gsmrus$ger$1@smc.vnet.net>
  • Reply-to: drmajorbob at bigfoot.com

I don't see, in the documentation, anything like Function[Null,  
body[##],Attributes] as a complete function -- that is, ##, #, or #n  
without their inclusion in a pure function ending in &.

Function[Null, body[##],Attributes]& perhaps, but not Function[Null,  
body[##],Attributes] alone.

Bobby

On Thu, 23 Apr 2009 05:46:37 -0500, Leonid Shifrin <lshifr at gmail.com>  
wrote:

> Yes indeed you are right, sorry for the confusion - just a stupid  
> mistake.
> I had in mind an (irrelevant to this problem)  possibility to use
> Function[Null, body[##],Attributes] to give attributes to pure functions
> defined with slots, which I believe is an undocumented feature (at least,
> according to Roman Maeder as of v.4 - may be now it is, but I did not see
> it).
>
>
> Regards,
> Leonid
>
> 2009/4/22 Szabolcs Horv=E1t <szhorvat at gmail.com>
>
>> Leonid Shifrin wrote:
>>
>>> Hi Ruth,
>>>
>>> You can use the undocumented form of the pure function which can take  
>>> an=
> y
>>> number of arguments:
>>>
>>> Function[Null, body[##]].
>>>
>>
>> This is a standard documented feature.  See these doc pages:
>>
>> http://reference.wolfram.com/mathematica/ref/Function.html#29126
>> http://reference.wolfram.com/mathematica/ref/SlotSequence.html
>>
>
>



-- 
DrMajorBob at bigfoot.com


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