multimap::clear (STL/CLR)

 

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

Removes all elements.

Syntax

void clear();  

Remarks

The member function effectively calls multimap::erase (STL/CLR)( multimap::begin (STL/CLR)(), multimap::end (STL/CLR)()). You use it to ensure that the controlled sequence is empty.

Example

// cliext_multimap_clear.cpp   
// compile with: /clr   
#include <cliext/map>   
  
typedef cliext::multimap<wchar_t, int> Mymultimap;   
int main()   
    {   
    Mymultimap c1;   
    c1.insert(Mymultimap::make_value(L'a', 1));   
    c1.insert(Mymultimap::make_value(L'b', 2));   
    c1.insert(Mymultimap::make_value(L'c', 3));   
  
// display contents " [a 1] [b 2] [c 3]"   
    for each (Mymultimap::value_type elem in c1)   
        System::Console::Write(" [{0} {1}]", elem->first, elem->second);   
    System::Console::WriteLine();   
  
// clear the container and reinspect   
    c1.clear();   
    System::Console::WriteLine("size() = {0}", c1.size());   
  
    c1.insert(Mymultimap::make_value(L'a', 1));   
    c1.insert(Mymultimap::make_value(L'b', 2));   
  
// display contents " [a 1] [b 2]"   
    for each (Mymultimap::value_type elem in c1)   
        System::Console::Write(" [{0} {1}]", elem->first, elem->second);   
    System::Console::WriteLine();   
    c1.clear();   
    System::Console::WriteLine("size() = {0}", c1.size());   
    return (0);   
    }  
  
 [a 1] [b 2] [c 3]  
size
() = 0  
 [a 1] [b 2]  
size
() = 0  

Requirements

Header: <cliext/map>

Namespace: cliext

See Also

multimap (STL/CLR)
multimap::erase (STL/CLR)