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 <boost/lambda/lambda.hpp>

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

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

#endif /* ARRAY_OPERATION_HPP */

if i have std::list<std::list<double> > 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 <dave@boost-consulting.com> wrote:

"chun ping wang" <cablepuff@gmail.com> 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

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