Re: [Boost-users] [Bind] Finding the right syntax.

18 Oct 2011


      here is one of the example, maybe not the best.

#include <vector>
#include "boost/function.hpp"
#include "boost/bind.hpp"

void apply( boost::function<void(int)> f, int i)
{
    f(i);
}

int main( )
{
    static boost::function<void(int)> my_function = 0;

    std::vector<int> v;

    std::for_each(v.begin(), v.end(), boost::bind(apply, my_function, _1));
}
...
"Robert Jones" <robertgbjones@gmail.com> 写入消息 
news:CAG3ZVmoX2g=G9sGBYef71cHR5bW->7CH6LBewLVE99SxFwtUWrw@mail.gmail.com...
Hi All
...
In the code below my objective is pass a nullary function object to apply, 
and for that
nullary function object to be 'my_function()' called with each member of 
the vector. How can I
recode the call to apply as a unary bind expression such that I can write 
the for loop
as a for_each loop?
...
Thx,
...
- Rob.
...
#include <vector>
#include "boost/function.hpp"
#include "boost/bind.hpp"
...
void apply( boost::function<void()> f )
{
    f( );
}
...
int main( )
{
    static boost::function<void(int)> my_function = 0;
...
std::vector<int> v;

...
for ( std::vector<int>::iterator i = v.begin( ); i != v.end( ); ++ i )
    {
        apply( bind( my_function, * i ) );
    }
}
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Re: [Boost-users] [Bind] Finding the right syntax.

gongyiling