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queue::difference_type (STL/CLR)

The types of a signed distance between two elements.

    typedef int difference_type;

The type describes a possibly negative element count.

// cliext_queue_difference_type.cpp 
// compile with: /clr 
#include <cliext/queue> 
 
typedef cliext::queue<wchar_t> Myqueue; 
int main() 
    { 
    Myqueue c1; 
    c1.push(L'a'); 
    c1.push(L'b'); 
    c1.push(L'c'); 
 
// display initial contents " a b c" 
    for each (wchar_t elem in c1.get_container()) 
        System::Console::Write(" {0}", elem); 
    System::Console::WriteLine(); 
 
// compute negative difference 
    Myqueue::difference_type diff = c1.size(); 
    c1.push(L'd'); 
    c1.push(L'e'); 
    diff -= c1.size(); 
    System::Console::WriteLine("pushing 2 = {0}", diff); 
 
// compute positive difference 
    diff = c1.size(); 
    c1.pop(); 
    c1.pop(); 
    c1.pop(); 
    diff -= c1.size(); 
    System::Console::WriteLine("popping 3 = {0}", diff); 
    return (0); 
    } 
 
 a b c
pushing 2 = -2
popping 3 = 3

Header: <cliext/queue>

Namespace: cliext

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