Re: [Boost-users] Using assign::map_list_of for complex types

From: Thorsten Ottosen (thorsten.ottosen_at_[hidden])
Date: 2006-11-16 05:24:00

Hughes, James wrote:
> Clip..
> 
>>>>{ }
>>>>
>>>
>>>
>>>I did something along these lines but still got a load of compile 
>>>faults. Will post a more accurate code snippet when time 
>>
>>allows, but 
>>
>>>have a deadline end of today!!
>>
>>You also need to call the constructor when you call map_list_of():
>>
>>   map_list_of(1, data( "hello", list_of(3)(4)(4) ) );
>>
>>-Thorsten
>>____
> 
> 
> 
> Thanks Thorsten, that did the trick. I had actually tried something
> along those line when trying to figure it out myself, but didn't know
> how to handle the range stuff you put in your example. Thanks again.

You're welcome. It will work if you have a normal vector<int> there too,
although that is slower.

> As a sort of aside, this example would make a good addition to the
> documentation, for those coming to C++ from C where this sort of nested
> structure initialisation is common (well, in my world it is!).

I'll leave that as a todo. It is already documented that the result of 
list_of() is a Range.

-Thorsten