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copied!<p>Yes; the Objective-C method syntax is like this for a couple of reasons; one of these is so that it is clear what the parameters you are specifying are. For example, if you are adding an object to an <code>NSMutableArray</code> at a certain index, you would do it using the method:</p> <pre><code>- (void)insertObject:(id)anObject atIndex:(NSUInteger)index; </code></pre> <p>This method is called <code>insertObject:atIndex:</code> and it is clear that an object is being inserted at a specified index.</p> <p>In practice, adding a string "Hello, World!" at index 5 of an <code>NSMutableArray</code> called <code>array</code> would be called as follows:</p> <pre><code>NSString *obj = @"Hello, World!"; int index = 5; [array insertObject:obj atIndex:index]; </code></pre> <p>This also reduces ambiguity between the order of the method parameters, ensuring that you pass the object parameter first, <em>then</em> the index parameter. This becomes more useful when using functions that take a large number of arguments, and reduces error in passing the arguments.</p> <p>Furthermore, the method naming convention is such because Objective-C doesn't support overloading; however, if you want to write a method that does the same job, but takes different data-types, this can be accomplished; take, for instance, the <code>NSNumber</code> class; this has several object creation methods, including:</p> <ul> <li><code>+ (id)numberWithBool:(BOOL)value;</code></li> <li><code>+ (id)numberWithFloat:(float)value;</code></li> <li><code>+ (id)numberWithDouble:(double)value;</code></li> </ul> <p>In a language such as C++, you would simply overload the number method to allow different data types to be passed as the argument; however, in Objective-C, this syntax allows several different variants of the same function to be implemented, by changing the name of the method for each variant of the function.</p>

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