Re: [Boost-users] converting value before inserting into a list

Hello, Alexander Shyrokov, You wrote:

I want to convert values according to a map before inserting it into the list. What is a proper way to do that? I have this:

map m; vector<int> a,b;

for(vector<int>const_iterator i=a.begin();i!=a.end();++i) b.push_back(m[*i]);

I could use std::copy with std::back_inserter to add elements to b, but how do I convert it first? Should I write my own version of back_inserter for that?

copy(a.begin(),a.end(),my_back_inserter(b,m));

Thanks.

Try this: #include using namespace boost; using namespace boost::lambda; //... //... map m; vector<int> a,b; std::transform(a.begin(), a.end(), std::back_inserter(b), var(m)[_1]); Flex