Re: [Boost-Users] boost.function as parameter of class template

From: hicks (hicks_at_[hidden])
Date: 2002-02-19 04:20:19

Hello,

I am curious as to the conditions under which an iterator adaptor for 
permutations
results in a savings of time and labor, or a clearer program.

Would anybody be so kind as to show an example?

Yours Sincerely,
Craig Hicks
KGK Tokyo

Douglas Gregor wrote:

>On Monday 18 February 2002 07:21 am, you wrote:
>
>>I want to use boost.function object as a parameter of class template:
>>
>>template< function1<void,int> F >
>>class foo
>>{
>>// ...
>>};
>>
>>but VC6 tells me "F : template parameter can never be initialized"
>>why?
>>
>
>The template parameter 'F' is a nontype template parameter. Nontype template 
>parameters can only be of integral type. boost::function1<void, int> is a 
>class type, so it cannot be used as the type of a nontype template parameter.
>
>We might be able to suggest an alternative construct if you give us more 
>information about the problem you are trying to solve.
>
>	Doug
>
>
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