Categories/NSMutableArray+MoveObject.h

   1 //
   2 //  NSMutableArray+MoveObject.h
   3 //  Enjoyable
   4 //
   5 //  Created by Joe Wreschnig on 3/7/13.
   6 //
   7 //
   8
   9 #import <Foundation/Foundation.h>
  10
  11 @interface NSMutableArray (MoveObject)
  12
  13 - (void)moveObjectAtIndex:(NSUInteger)src toIndex:(NSUInteger)dst;
  14     // Move the object at index src to (pre-move) index dst. Other
  15     // objects shift up or down as necessary to make room, as in
  16     // insertObject:atIndex:. Because the object is also removed from
  17     // the source index, its resulting index may be one less than dst.
  18
  19 - (BOOL)moveFirstwards:(id)object upTo:(NSUInteger)minIndex;
  20 - (BOOL)moveLastwards:(id)object upTo:(NSUInteger)maxIndex;
  21     // Move an object one step towards the first or last position in
  22     // the array, up to a minimum or maximum index. Returns YES if the
  23     // array changed; NO if the object was not in the array or was
  24     // already at the minimum/maximum index.
  25
  26 - (BOOL)moveFirstwards:(id)object;
  27 - (BOOL)moveLastwards:(id)object;
  28     // Move an object towards the first or last position in the array.
  29     // Returns YES if the array changed; NO if the object was not in
  30     // the array or if the object was already in the first/last
  31     // position.
  32
  33
  34 @end