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Data Structures Through C in Depth

Every new feature from C 2 onwards is c in depth book, however, as shown in the table of contents below. One of my hobbies is helping other developers on sites such as Stack Overflow ; before Stack Overflow came along, I used to post a lot on the C newsgroups. I've come to appreciate that whatever technologies you might use on top of C - MVC, WPF, Windows Forms, etc - if you don't have a firm grasp of the language, you'll find it a lot harder.

My hope is that C in Depth helps readers to really "grok" the language, so they feel they're c in depth book in tandem with the compiler rather than fighting against it; making the most of new features instead of constantly being caught out by subtle "gotcha" behaviour.

Manning | C# in Depth, Fourth Edition

But, since an id type can hold a pointer to any object, how do we know that the object has the wordCount method defined? How do we know that what we are getting out is indeed a Document?

We could merely declare different classes for lists containing Documents, or lists containing other types, but this duplicates a lot of functionality, which is not the best practice and we lose the generic nature c in depth book our LinkedListNode class. Objective-C provides you with many different solutions to this problem.

Dynamic binding[ edit ] Say that our linked list doesn't just contain Documents, but has also Spreadsheet and Chart objects as well. Let's assume all these objects have a title method defined, but implemented c in depth book.

Since at the core of LinkedListNode is the id class, how would we know which title method will be called when we pull out an object from our linked list? Will it be Document's?

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Dynamic binding is a solution to this problem. Dynamic binding means that when c in depth book call a certain object's method, and there are several implementations of that method, the right one is figured out at runtime.

In Objective-C, this idea is used, but is also extended - you are permitted to send any message to any object. At first glance this may sound rather dangerous, but in fact this allows c in depth book a lot of flexibility.

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Let's return to our example. We want to print out all the titles of the objects in the linked list, based on their title method. C in depth book, other circumstances may require more than just this.

I want to say more but this is all basics for dynamic binding.


If we have, for example, a Chart object in one of the nodes, and it c in depth book have wordCount defined in Objective-C terminology, we say that Chart objects do not respond to wordCountand we try and do something like: We ask the Chart to give us a word count, but it doesn't know what to do!

In Objective-C, in this c in depth book, Chart or any other object can do two things: We'll look at the second situation in the next section.

So, in this instance, the program fails and reports an error. We can add the following check, to get: The class method, class, returns a class object.


The type Class is a special type that can hold c in depth book pointer to any class object similar to how id can hold a pointer to any object. The instance method class also returns the class object for the class of the object.

C# in Depth: About this site, and C# in Depth

We could also achieve this result using [p isMemberOfClass: Reviewers are raving about the code examples and the way the language has been presented.

Look at the detailed table of contents here and access the exercises here.


You can buy the book here. It takes you from standard library abstractions to defining your own. Key takeaways that crystallize low-level and high-level concepts and end-of-chapter exercises cement your understanding.