test_multimap.cxx

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// This is vcl/tests/test_multimap.cxx
#include <vcl_functional.h>
#include <vcl_iostream.h>
#include <vcl_map.h>

typedef vcl_multimap<int, double, vcl_less<int> > mymap;

vcl_ostream &operator<<(vcl_ostream &s, mymap::value_type const &x)
{
  return s << '(' << x.first << ',' << x.second << ')';
}

int test_multimap_main(int /*argc*/,char* /*argv*/[])
{
  mymap m;
  m.insert(mymap::value_type(0, 2.718281828459045)); // e
  m.insert(mymap::value_type(1, 3.141592653589793)); // pi
  m.insert(mymap::value_type(2, 1.414213562373095)); // sqrt(2)
  m.insert(mymap::value_type(3, 1.61803398874989)); // golden number

  mymap::iterator b = m.begin();
  mymap::iterator e = m.end();

  vcl_cout << "the whole container:" << vcl_endl;
  for (mymap::iterator p = b; p != e; ++p)
    vcl_cout << *p << vcl_endl;

  vcl_cout << "lower_bound() and upper_bound():" << vcl_endl;
  for (int k=-1; k<=4; ++k) {
    vcl_cout << "k=" << k << vcl_endl;

    mymap::iterator lo = m.lower_bound(k);
    vcl_cout << "  lo: ";
    if (lo==b) vcl_cout << "begin";
    else if (lo==e) vcl_cout << "end";
    else vcl_cout << *lo;
    vcl_cout << vcl_endl;

    mymap::iterator hi = m.upper_bound(k);
    vcl_cout << "  hi: ";
    if (hi==b) vcl_cout << "begin";
    else if (hi==e) vcl_cout << "end";
    else vcl_cout << *hi;
    vcl_cout << vcl_endl;
  }

  return 0;
}