multimap::equal_range (STL/CLR)

Finds range that matches a specified key.

    pair_iter_iter equal_range(key_type _Keyval);

Parameters

• _Keyval
  Key value to search for.

Remarks

The method returns a pair of iterators - multimap::lower_bound (STL/CLR)(_Keyval), multimap::upper_bound (STL/CLR)(_Keyval). You use it to determine the range of elements currently in the controlled sequence that match a specified key.

Example

// cliext_multimap_equal_range.cpp 
// compile with: /clr 
#include <cliext/map> 
 
typedef cliext::multimap<wchar_t, int> Mymultimap; 
typedef Mymultimap::pair_iter_iter Pairii; 
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(); 
 
// display results of failed search 
    Pairii pair1 = c1.equal_range(L'x'); 
    System::Console::WriteLine("equal_range(L'x') empty = {0}", 
        pair1.first == pair1.second); 
 
// display results of successful search 
    pair1 = c1.equal_range(L'b'); 
    for (; pair1.first != pair1.second; ++pair1.first) 
        System::Console::Write(" [{0} {1}]", 
            pair1.first->first, pair1.first->second); 
    System::Console::WriteLine(); 
    return (0); 
    } 
 

[a 1] [b 2] [c 3] equal_range(L'x') empty = True [b 2]

Requirements

Header: <cliext/map>

Namespace: cliext

See Also

Reference

multimap (STL/CLR)

multimap::count (STL/CLR)

multimap::find (STL/CLR)

multimap::lower_bound (STL/CLR)

multimap::upper_bound (STL/CLR)

Change History