Re: [boost] phoenix::bind

Subject: Re: [boost] phoenix::bind
From: Joel de Guzman (joel_at_[hidden])
Date: 2008-10-02 19:10:02

Peter Dimov wrote:
>> Joel de Guzman:
>>
>>> Maybe you want:
>>>
>>>      let(_a = 0)[ ++_a ]
>>
>> Maybe I do. :-)
> 
> No, I don't. This compiles, but always returns 1 when invoked. I want 
> the equivalent of:
> 
> struct _F
> {
>    int _a;
> 
>    _F(): _a( 0 ) {}
> 
>    int operator()() { return ++_a; }
> };

Oh right. A stateful variable. In the POV of the op() it's not
really a local variable, right? A local variable is more like:

   struct _F
   {
      int operator()() { int _a = 0; return ++_a; }
   };

I don't think the locals are what you want here.

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