Re: [boost] phoenix::bind

Subject: Re: [boost] phoenix::bind
From: Joel de Guzman (joel_at_[hidden])
Date: 2008-09-29 23:04:45

Eric Niebler wrote:
> 
> Peter Dimov wrote:
>> Eric Niebler:

>> The other thorny issue is that lambda expressions aren't Assignable, 
>> because their operator= creates a new lambda exression instead. This 
>> might well be unfixable.
> 
> We could make lambdas Assignable by defining the ordinary assignment 
> operator when the rhs has the same type as the lhs. That would rule out 
> strange lambdas like "_1 = _1" , but I don't see that as a huge loss.

I think that's a good compromise.

>>> I support Joel's approach of deprecating the old lambda interface and 
>>> migrating folks to phoenix.
>>
>> I've always thought that the plan was for Lambda and Phoenix to merge 
>> one day.
> 
> That used to be the plan, long ago before Joel came to fully appreciate 
> the subtle differences between the two.
> 
>> Apart from that, I'm not a Lambda user, so I don't have an opinion. :-)
> 
> Even your non-opinions are valuable. :-)

Peter, you rock! I highly value all your opinions.

Regards,
-- 
Joel de Guzman
http://www.boostpro.com
http://spirit.sf.net