Re: [Boost-Users] Newbie boost::bind problem

From: Mark Snelling (mark_at_[hidden])
Date: 2002-09-12 16:18:30

Thank you. It may seem that I'm going about this the 'hard' way, but I'm 
really using it to get a grip on the boost::bind library.

Thanks again.

Mark.

Peter Dimov wrote:
> From: "Mark Snelling" <mark_at_[hidden]>
> 
>>Ok, I understand the following:
>>
> 
> std::for_each(mylist.begin(),mylist.end(),boost::checked_deleter<Object>());
> 
>>But when I try to use the boost::checked_deleter on the objects held in
>>a map using your solution to my first problem I don't seem to be able to
>>get it to compile:
>>
>>template<class It, class F> void for_each_pair(It first, It last, F f)
>>{
>>     for(; first != last; ++first)
>>     {
>>         f(first->first, first->second);
>>     }
>>}
>>
>>int main()
>>{
>>     std::map<int, Block*> blocks;
>>     std::for_each_pair(blocks.begin(), blocks.end(),
>>         boost::bind(boost::checked_delete<Block>(), _2));
>>}
> 
> 
> checked_delete is a function template (no trailing 'r'); checked_deleter is
> a class template. :-)
> 
> Also, on MSVC 6/7 you need to specify a return type when binding general
> function objects:
> 
> boost::bind<void>(boost::checked_deleter<Block>(), _2)
> 
> 
> 
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