initial commit

NSMutableArray+QueueAdditions.m

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+//
+//  NSMutableArray+QueueAdditions.m
+//  BlockBlock
+//
+//  Created by Patrick Wardle on 9/26/14.
+//  Copyright (c) 2014 Synack. All rights reserved.
+//
+
+#import "NSMutableArray+QueueAdditions.h"
+
+@implementation NSMutableArray (QueueAdditions)
+
+//add object to tail (end) of queue
+-(void)enqueue:(id)anObject
+{
+    //sync
+    @synchronized(self)
+    {
+        //add object
+        [self addObject: anObject];
+    }
+}
+
+//grab next item in queue
+-(id)dequeue
+{
+    //extract object
+    id queueObject = nil;
+    
+    //sync
+    @synchronized(self)
+    {
+        //check to make sure there are some items
+        if(YES != [self empty])
+        {
+            //extract first one
+            queueObject = [self objectAtIndex: 0];
+            
+            //delete it from queue
+            [self removeObjectAtIndex: 0];
+        }
+        
+    }//sync
+    
+    return queueObject;
+}
+
+// Checks if the queue is empty
+-(BOOL)empty
+{
+    return ([self lastObject] == nil);
+}
+
+@end