===== isEqualToString=====

<code objc>    
   - (BOOL)isEqualToString:(NSString *)aString;   
</code> 

Returns a Boolean value that indicates whether a given string is equal to the receiver using an literal Unicode-based comparison.

===== ObjC Sourcecode Example =====
<code objc> 
    NSString *myString1=@"Hello World";
    NSString *myString2=@"Hello World";
          
        if([myString1 isEqualToString:myString2]){
        
            NSLog(@"similar");
        }
        else{
        
            NSLog(@"dissimilar");
        }
        
         //  it returns a boolean, a special int
        NSLog(@"%i", [myString1 isEqualToString:myString2]);
        </code>

==== Output for this example code ====
<code>2012-04-15 12:47:04.266 FoundationNSString[719:403] similar
2012-04-15 12:47:04.269 FoundationNSString[719:403] 1</code>