multimap::lower_bound (STL/CLR)

Finds beginning of range that matches a specified key.

    iterator lower_bound(key_type key);


  • key
    Key value to search for.


The member function determines the first element X in the controlled sequence that has equivalent ordering to key. If no such element exists, it returns multimap::end (STL/CLR)(); otherwise it returns an iterator that designates X. You use it to locate the beginning of a sequence of elements currently in the controlled sequence that match a specified key.


// cliext_multimap_lower_bound.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("lower_bound(L'x')==end() = {0}", 
        c1.lower_bound(L'x') == c1.end()); 
    Mymultimap::iterator it = c1.lower_bound(L'a'); 
    System::Console::WriteLine("*lower_bound(L'a') = [{0} {1}]", 
        it->first, it->second); 
    it = c1.lower_bound(L'b'); 
    System::Console::WriteLine("*lower_bound(L'b') = [{0} {1}]", 
        it->first, it->second); 
    return (0); 
 [a 1] [b 2] [c 3]
lower_bound(L'x')==end() = True
*lower_bound(L'a') = [a 1]
*lower_bound(L'b') = [b 2]


Header: <cliext/map>

Namespace: cliext

See Also


multimap (STL/CLR)

multimap::count (STL/CLR)

multimap::equal_range (STL/CLR)

multimap::find (STL/CLR)

multimap::upper_bound (STL/CLR)