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list::difference_type (STL/CLR)

 

The latest version of this topic can be found at list::difference_type (STL/CLR).

The types of a signed distance between two elements.

typedef int difference_type;  

The type describes a signed element count.

// cliext_list_difference_type.cpp   
// compile with: /clr   
#include <cliext/list>   
  
int main()   
    {   
    cliext::list<wchar_t> c1;   
    c1.push_back(L'a');   
    c1.push_back(L'b');   
    c1.push_back(L'c');   
  
// display initial contents " a b c"   
    for each (wchar_t elem in c1)   
        System::Console::Write(" {0}", elem);   
    System::Console::WriteLine();   
  
// compute positive difference   
    cliext::list<wchar_t>::difference_type diff = 0;   
    for (cliext::list<wchar_t>::iterator it = c1.begin();   
        it != c1.end(); ++it) ++diff;   
    System::Console::WriteLine("end()-begin() = {0}", diff);   
  
// compute negative difference   
    diff = 0;   
    for (cliext::list<wchar_t>::iterator it = c1.end();   
        it != c1.begin(); --it) --diff;   
    System::Console::WriteLine("begin()-end() = {0}", diff);   
    return (0);   
    }  
  

 a b c  
end()-begin() = 3  
begin()-end() = -3  

Header: <cliext/list>

Namespace: cliext

list (STL/CLR)
list::size_type (STL/CLR)

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