C++ unique_ptr and map

Question

I\'m trying to use the C++0x unique_ptr class inside a map like so:

// compile with `g++ main.cpp -std=gnu++0x`

#include     
#include 

        

Answer 1

I've just been tinkering with unique_ptr in gcc 4.6.0. Here's some (very ugly) code which works correctly:

std::map > table;
table.insert(std::pair>(15, std::unique_ptr(new int(42))));
table[2] = std::move(table[15]);
for (auto& i : table)
{
    if (i.second.get())
        printf("%d\n", *i.second);
    else
    {
        printf("empty\n");
        i.second.reset(new int(12));
    }
}
printf("%d\n", *table[15]);

The output is 42, empty, 12 - so apparently it works. As far as I can tell, the only 'problem' is that awful looking insert command. 'emplace' isn't implemented in gcc 4.6.0