Re: [Boost-users] using lambda as function argument.

14 Apr 2006

      For some reason this thing don't work. I want to print a container of
container.....

#ifndef ARRAY_OPERATION_HPP
#define ARRAY_OPERATION_HPP
#include <iostream>
#include 

template 
         class CONT
...
void print_array(const CONT<T>& array)
{
     using namespace boost::lambda;
     std::for_each(array.begin(), array.end(), std::cout << _1 << " ");
}

template 
         class CONT
...
void print_2darray (const CONT& array)
{
     using namespace boost::lambda;
        CONT<T> temp;
        std::for_each(array.begin(), array.end(),
              bind(print_array(), _1)
        );
}

#endif /* ARRAY_OPERATION_HPP */

if i have std::list lOflDouble

// insert some value in here.

print_2darray<double>(lOflDouble);

/*
30 C:\cs classes\cs540\c++\ContainerOperation.hpp no matching function for
call to `print_array()'
*/

On 4/14/06, David Abrahams  wrote:
...
"chun ping wang"  writes:
...
Heres a simple question, that i want to do.
Lets say you have a function call void f(double);
and then you want to apply f to each argument inside vector<double> a;
for_each(a.begin(), a.end(), f(_1));
// the example above isn't possible..is there a simple way to do
this?
for_each(a.begin(), a.end(), bind(f, _1));
HTH,
--
Dave Abrahams
Boost Consulting
www.boost-consulting.com
_______________________________________________
Boost-users mailing list
Boost-users@lists.boost.org
http://lists.boost.org/mailman/listinfo.cgi/boost-users