[boost] Re: Pretty Good Initialization Library

From: Vladimir Prus (ghost_at_[hidden])
Date: 2004-07-10 02:59:22

Thorsten Ottosen wrote:

> Vladimir Prus <ghost <at> cs.msu.su> writes:
> 
>>> Ok, I understand. I'm writing at the moment code like:
>>        .......
>>        (*casts)[make_pair(Type::FloatTy, Type::DoubleTy)] =
>>                     NM::FTOD;
>> 
>> and I think I'd rather like to eliminate that (*casts) part, and
>> make_pair, but while assign library can eliminate (*casts), I'm not sure
>> it can do much about 'make_pair'. Or it can....?
> 
> Hm...it can't totally figure out you code, but surely you don't need
> make-pair or anything. Any list of arguments can be forwarded to a call to
> the constructor of the type you're dealing with.
> 
> Please see the docs in /libs/assign/

Hmm.. maybe you can give me more hints? While:

    vector<pair<int, int> > v;
    push_back(v)(1, 2);

works, 

    map<pair<int, int>,int> months;  
    insert(months)
        (1, 2, 3);

does not, and 

    map<pair<int, int>,int> months;  
        ( list_of(1, 2),   31 )

does not work either.

- Volodya