Re: [boost] [variant] Please vote for behavior

Subject: Re: [boost] [variant] Please vote for behavior
From: Larry Evans (cppljevans_at_[hidden])
Date: 2013-01-30 13:17:14

On 01/30/13 08:55, Larry Evans wrote:
> On 01/30/13 04:58, Antony Polukhin wrote:
> [snip]
>> Now we just need to decide, what a recursive_wrapper is! Is it behave
>> like a reference:
>>
>> // # 1
>> union my_union {
>>     my_union& u_;
>>     int i_;
>> };
>>
>> Or is it behave like a pointer:
>>
>> // # 2
>> union my_union {
>>     unique_ptr<my_union> u_;
>>     int i_;
>> };
>>
>> #1 is not what a recursive_wrapper is, because recursive_wrapper OWNS a value
>> #2 is much closer to functionality of recursive_wrapper
>>
> [snip]
> So #2 would be like:
> 
>   int
> OR
>   int*
> OR
>   int**
> .
> .
> .
>   int********....
> 
> Is that right?
> 
I think it is based on the output:

vec_us.size()=0
vec_us[0]=
  :te[0]=0

vec_us[1]=
  :te[0]=1
  :te[1]=0

vec_us[2]=
  :te[0]=1
  :te[1]=1
  :te[2]=0

vec_us.size()=3

from the attached.

-regards,
Larry