Merge pull request #38 from Vortec4800/master

Added subscripting support to FirebaseArray

Author: asciimike

FirebaseUI/Core/API/FirebaseArray.h

@@ -102,6 +102,19 @@
  */
 - (Firebase *)refForIndex:(NSUInteger)index;
 
+/**
+ * Support for subscripting. Resolves to objectAtIndex:
+ * @param index The index of the item to retrieve
+ * @return The object at the given index
+ */
+- (id)objectAtIndexedSubscript:(NSUInteger)idx;
+
+/**
+ * Support for subscripting. This method is unused and trying to write directly to the
+ * array using subscripting will cause an assertion.
+ */
+- (void)setObject:(id)obj atIndexedSubscript:(NSUInteger)idx;
+
 #pragma mark -
 #pragma mark Private API methods
 

FirebaseUI/Core/Implementation/FirebaseArray.m

@@ -152,4 +152,12 @@ - (Firebase *)refForIndex:(NSUInteger)index {
   return [(FDataSnapshot *)[self.snapshots objectAtIndex:index] ref];
 }
 
+- (id)objectAtIndexedSubscript:(NSUInteger)index{
+	return [self objectAtIndex:index];
+}
+
+- (void)setObject:(id)obj atIndexedSubscript:(NSUInteger)index{
+	NSAssert(NO, @"Subscripting is read-only on FirebaseArray");
+}
+
 @end