libs-base/Examples/dictionary.m

/* A simple demonstration of the NSDictionary object.
   In this example the NSDictionary holds int's which are keyed by strings. */


#include <Foundation/Foundation.h>
#include <Foundation/NSAutoreleasePool.h>
#include <Foundation/NSDictionary.h>
#include <Foundation/NSValue.h>
#include <Foundation/NSString.h>

int
main()
{
  NSMutableDictionary	*d;
  CREATE_AUTORELEASE_POOL(pool);

  /* Create a Dictionary object. */
  d = [[NSMutableDictionary alloc] initWithCapacity: 32];

  /* Load the dictionary with some items */
  [d setObject: [NSNumber numberWithInt: 1] forKey: @"one"];
  [d setObject: [NSNumber numberWithInt: 2] forKey: @"two"];
  [d setObject: [NSNumber numberWithInt: 3] forKey: @"three"];
  [d setObject: [NSNumber numberWithInt: 4] forKey: @"four"];
  [d setObject: [NSNumber numberWithInt: 5] forKey: @"five"];
  [d setObject: [NSNumber numberWithInt: 6] forKey: @"six"];
  
  NSLog(@"There are %u elements stored in the dictionary\n", [d count]);

  NSLog(@"Element %d is stored at \"%s\"\n", 
    [[d objectForKey: @"three"] intValue], "three");

  NSLog(@"Removing element stored at \"three\"\n");
  [d removeObjectForKey: @"three"];

  NSLog(@"Now there are %u elements stored in the dictionary\n", [d count]);

  DESTROY(pool);
  exit(0);
}