Author: Stephen G. Kochan
Publisher: Pearson Education
ISBN: 0321605543
Category : Computers
Languages : en
Pages : 780
Book Description
THE #1 BESTSELLING BOOK ON OBJECTIVE-C 2.0 Programming in Objective-C 2.0 provides the new programmer a complete, step-by-step introduction to Objective-C, the primary language used to develop applications for the iPhone, iPad, and Mac OS X platforms. The book does not assume previous experience with either C or object-oriented programming languages, and it includes many detailed, practical examples of how to put Objective-C to use in your everyday iPhone/iPad or Mac OS X programming tasks. A powerful yet simple object-oriented programming language that’s based on the C programming language, Objective-C is widely available not only on OS X and the iPhone/iPad platform but across many operating systems that support the gcc compiler, including Linux, Unix, and Windows systems. The second edition of this book thoroughly covers the latest version of the language, Objective-C 2.0. And it shows not only how to take advantage of the Foundation framework’s rich built-in library of classes but also how to use the iPhone SDK to develop programs designed for the iPhone/iPad platform. Table of Contents 1 Introduction Part I: The Objective-C 2.0 Language 2 Programming in Objective-C 3 Classes, Objects, and Methods 4 Data Types and Expressions 5 Program Looping 6 Making Decisions 7 More on Classes 8 Inheritance 9 Polymorphism, Dynamic Typing, and Dynamic Binding 10 More on Variables and Data Types 11 Categories and Protocols 12 The Preprocessor 13 Underlying C Language Features Part II: The Foundation Framework 14 Introduction to the Foundation Framework 15 Numbers, Strings, and Collections 16 Working with Files 17 Memory Management 18 Copying Objects 19 Archiving Part III: Cocoa and the iPhone SDK 20 Introduction to Cocoa 21 Writing iPhone Applications Part IV: Appendixes A Glossary B Objective-C 2.0 Language Summary C Address Book Source Code D Resources
Programming in Objective-C 2.0
Author: Stephen G. Kochan
Publisher: Pearson Education
ISBN: 0321605543
Category : Computers
Languages : en
Pages : 780
Book Description
THE #1 BESTSELLING BOOK ON OBJECTIVE-C 2.0 Programming in Objective-C 2.0 provides the new programmer a complete, step-by-step introduction to Objective-C, the primary language used to develop applications for the iPhone, iPad, and Mac OS X platforms. The book does not assume previous experience with either C or object-oriented programming languages, and it includes many detailed, practical examples of how to put Objective-C to use in your everyday iPhone/iPad or Mac OS X programming tasks. A powerful yet simple object-oriented programming language that’s based on the C programming language, Objective-C is widely available not only on OS X and the iPhone/iPad platform but across many operating systems that support the gcc compiler, including Linux, Unix, and Windows systems. The second edition of this book thoroughly covers the latest version of the language, Objective-C 2.0. And it shows not only how to take advantage of the Foundation framework’s rich built-in library of classes but also how to use the iPhone SDK to develop programs designed for the iPhone/iPad platform. Table of Contents 1 Introduction Part I: The Objective-C 2.0 Language 2 Programming in Objective-C 3 Classes, Objects, and Methods 4 Data Types and Expressions 5 Program Looping 6 Making Decisions 7 More on Classes 8 Inheritance 9 Polymorphism, Dynamic Typing, and Dynamic Binding 10 More on Variables and Data Types 11 Categories and Protocols 12 The Preprocessor 13 Underlying C Language Features Part II: The Foundation Framework 14 Introduction to the Foundation Framework 15 Numbers, Strings, and Collections 16 Working with Files 17 Memory Management 18 Copying Objects 19 Archiving Part III: Cocoa and the iPhone SDK 20 Introduction to Cocoa 21 Writing iPhone Applications Part IV: Appendixes A Glossary B Objective-C 2.0 Language Summary C Address Book Source Code D Resources
Publisher: Pearson Education
ISBN: 0321605543
Category : Computers
Languages : en
Pages : 780
Book Description
THE #1 BESTSELLING BOOK ON OBJECTIVE-C 2.0 Programming in Objective-C 2.0 provides the new programmer a complete, step-by-step introduction to Objective-C, the primary language used to develop applications for the iPhone, iPad, and Mac OS X platforms. The book does not assume previous experience with either C or object-oriented programming languages, and it includes many detailed, practical examples of how to put Objective-C to use in your everyday iPhone/iPad or Mac OS X programming tasks. A powerful yet simple object-oriented programming language that’s based on the C programming language, Objective-C is widely available not only on OS X and the iPhone/iPad platform but across many operating systems that support the gcc compiler, including Linux, Unix, and Windows systems. The second edition of this book thoroughly covers the latest version of the language, Objective-C 2.0. And it shows not only how to take advantage of the Foundation framework’s rich built-in library of classes but also how to use the iPhone SDK to develop programs designed for the iPhone/iPad platform. Table of Contents 1 Introduction Part I: The Objective-C 2.0 Language 2 Programming in Objective-C 3 Classes, Objects, and Methods 4 Data Types and Expressions 5 Program Looping 6 Making Decisions 7 More on Classes 8 Inheritance 9 Polymorphism, Dynamic Typing, and Dynamic Binding 10 More on Variables and Data Types 11 Categories and Protocols 12 The Preprocessor 13 Underlying C Language Features Part II: The Foundation Framework 14 Introduction to the Foundation Framework 15 Numbers, Strings, and Collections 16 Working with Files 17 Memory Management 18 Copying Objects 19 Archiving Part III: Cocoa and the iPhone SDK 20 Introduction to Cocoa 21 Writing iPhone Applications Part IV: Appendixes A Glossary B Objective-C 2.0 Language Summary C Address Book Source Code D Resources
Objective-C Programming
Author: Aaron Hillegass
Publisher: Addison-Wesley
ISBN: 0321706285
Category : Computers
Languages : en
Pages : 283
Book Description
Looks at the basics of Objective-C programming for Apple technologies, covering such topics as Xcode, classes, properties, categories, loops, and ARC.
Publisher: Addison-Wesley
ISBN: 0321706285
Category : Computers
Languages : en
Pages : 283
Book Description
Looks at the basics of Objective-C programming for Apple technologies, covering such topics as Xcode, classes, properties, categories, loops, and ARC.
Programming in Objective-C
Author: Stephen G. Kochan
Publisher: Addison-Wesley Professional
ISBN: 0321811909
Category : Computers
Languages : en
Pages : 561
Book Description
Presents an introduction to Objective-C, covering such topics as classes and objects, data types, program looping, inheritance, polymorphism, variables, memory management, and archiving.
Publisher: Addison-Wesley Professional
ISBN: 0321811909
Category : Computers
Languages : en
Pages : 561
Book Description
Presents an introduction to Objective-C, covering such topics as classes and objects, data types, program looping, inheritance, polymorphism, variables, memory management, and archiving.
Objective-C For Dummies
Author: Neal Goldstein
Publisher: John Wiley & Sons
ISBN: 047056136X
Category : Computers
Languages : en
Pages : 460
Book Description
Learn the primary programming language for creating iPhone and Mac apps The only thing hotter than the iPhone right now is new apps for the iPhone. Objective-C is the primary language for programming iPhone and Mac OS X applications, and this book makes it easy to learn Objective-C. Even if you have no programming experience, Objective-C For Dummies will teach you what you need to know to start creating iPhone apps. It provides an understanding of object-oriented programming in an entertaining way that helps you learn. iPhone and Mac apps are hot, and most are created with Objective-C Covers Xcode 3.2, which is included in Mac OS X Snow Leopard Explains object-oriented programming concepts in a straightforward but fun style that makes learning easy Ideal for those with no programming experience as well as those who may know other languages but are new to Objective-C Prepares you to start creating iPhone and Mac OS X apps Understand Mac programming concepts and patterns, and why to use them Bonus CD includes all code samples used in the book Objective-C For Dummies gives you the tools to turn your idea for an iPhone app into reality. Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.
Publisher: John Wiley & Sons
ISBN: 047056136X
Category : Computers
Languages : en
Pages : 460
Book Description
Learn the primary programming language for creating iPhone and Mac apps The only thing hotter than the iPhone right now is new apps for the iPhone. Objective-C is the primary language for programming iPhone and Mac OS X applications, and this book makes it easy to learn Objective-C. Even if you have no programming experience, Objective-C For Dummies will teach you what you need to know to start creating iPhone apps. It provides an understanding of object-oriented programming in an entertaining way that helps you learn. iPhone and Mac apps are hot, and most are created with Objective-C Covers Xcode 3.2, which is included in Mac OS X Snow Leopard Explains object-oriented programming concepts in a straightforward but fun style that makes learning easy Ideal for those with no programming experience as well as those who may know other languages but are new to Objective-C Prepares you to start creating iPhone and Mac OS X apps Understand Mac programming concepts and patterns, and why to use them Bonus CD includes all code samples used in the book Objective-C For Dummies gives you the tools to turn your idea for an iPhone app into reality. Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.
Effective Objective-C 2.0
Author: Matt Galloway
Publisher: Addison-Wesley
ISBN: 0133386945
Category : Computers
Languages : en
Pages : 312
Book Description
Write Truly Great iOS and OS X Code with Objective-C 2.0! Effective Objective-C 2.0 will help you harness all of Objective-C’s expressive power to write OS X or iOS code that works superbly well in production environments. Using the concise, scenario-driven style pioneered in Scott Meyers’ best-selling Effective C++, Matt Galloway brings together 52 Objective-C best practices, tips, shortcuts, and realistic code examples that are available nowhere else. Through real-world examples, Galloway uncovers little-known Objective-C quirks, pitfalls, and intricacies that powerfully impact code behavior and performance. You’ll learn how to choose the most efficient and effective way to accomplish key tasks when multiple options exist, and how to write code that’s easier to understand, maintain, and improve. Galloway goes far beyond the core language, helping you integrate and leverage key Foundation framework classes and modern system libraries, such as Grand Central Dispatch. Coverage includes Optimizing interactions and relationships between Objective-C objects Mastering interface and API design: writing classes that feel “right at home” Using protocols and categories to write maintainable, bug-resistant code Avoiding memory leaks that can still occur even with Automatic Reference Counting (ARC) Writing modular, powerful code with Blocks and Grand Central Dispatch Leveraging differences between Objective-C protocols and multiple inheritance in other languages Improving code by more effectively using arrays, dictionaries, and sets Uncovering surprising power in the Cocoa and Cocoa Touch frameworks
Publisher: Addison-Wesley
ISBN: 0133386945
Category : Computers
Languages : en
Pages : 312
Book Description
Write Truly Great iOS and OS X Code with Objective-C 2.0! Effective Objective-C 2.0 will help you harness all of Objective-C’s expressive power to write OS X or iOS code that works superbly well in production environments. Using the concise, scenario-driven style pioneered in Scott Meyers’ best-selling Effective C++, Matt Galloway brings together 52 Objective-C best practices, tips, shortcuts, and realistic code examples that are available nowhere else. Through real-world examples, Galloway uncovers little-known Objective-C quirks, pitfalls, and intricacies that powerfully impact code behavior and performance. You’ll learn how to choose the most efficient and effective way to accomplish key tasks when multiple options exist, and how to write code that’s easier to understand, maintain, and improve. Galloway goes far beyond the core language, helping you integrate and leverage key Foundation framework classes and modern system libraries, such as Grand Central Dispatch. Coverage includes Optimizing interactions and relationships between Objective-C objects Mastering interface and API design: writing classes that feel “right at home” Using protocols and categories to write maintainable, bug-resistant code Avoiding memory leaks that can still occur even with Automatic Reference Counting (ARC) Writing modular, powerful code with Blocks and Grand Central Dispatch Leveraging differences between Objective-C protocols and multiple inheritance in other languages Improving code by more effectively using arrays, dictionaries, and sets Uncovering surprising power in the Cocoa and Cocoa Touch frameworks
Learn Objective-C on the Mac
Author: Scott Knaster
Publisher: Apress
ISBN: 1430241896
Category : Computers
Languages : en
Pages : 370
Book Description
Learn to write apps for some of today's hottest technologies, including the iPhone and iPad (using iOS), as well as the Mac (using OS X). It starts with Objective-C, the base language on which the native iOS software development kit (SDK) and the OS X are based. Learn Objective-C on the Mac: For OS X and iOS, Second Edition updates a best selling book and is an extensive, newly updated guide to Objective-C. Objective-C is a powerful, object-oriented extension of C, making this update the perfect follow-up to Dave Mark’s bestselling Learn C on the Mac. Whether you’re an experienced C programmer or you’re coming from a different language such as C++ or Java, leading Mac experts Scott Knaster and Waqar Malik show how to harness the power of Objective-C in your apps! A complete course on the basics of Objective-C using Apple’s newest Xcode tools An introduction to object-oriented programming Comprehensive coverage of new topics like blocks, GCD, ARC, class extensions, as well as inheritance, composition, object initialization, categories, protocols, memory management, and organizing source files An introduction to building user interfaces using what is called the UIKit A primer for non-C programmers to get off the ground even faster
Publisher: Apress
ISBN: 1430241896
Category : Computers
Languages : en
Pages : 370
Book Description
Learn to write apps for some of today's hottest technologies, including the iPhone and iPad (using iOS), as well as the Mac (using OS X). It starts with Objective-C, the base language on which the native iOS software development kit (SDK) and the OS X are based. Learn Objective-C on the Mac: For OS X and iOS, Second Edition updates a best selling book and is an extensive, newly updated guide to Objective-C. Objective-C is a powerful, object-oriented extension of C, making this update the perfect follow-up to Dave Mark’s bestselling Learn C on the Mac. Whether you’re an experienced C programmer or you’re coming from a different language such as C++ or Java, leading Mac experts Scott Knaster and Waqar Malik show how to harness the power of Objective-C in your apps! A complete course on the basics of Objective-C using Apple’s newest Xcode tools An introduction to object-oriented programming Comprehensive coverage of new topics like blocks, GCD, ARC, class extensions, as well as inheritance, composition, object initialization, categories, protocols, memory management, and organizing source files An introduction to building user interfaces using what is called the UIKit A primer for non-C programmers to get off the ground even faster
iPhone Programming
Author: Aaron Hillegass
Publisher: Addison-Wesley Professional
ISBN: 0321706463
Category : Computers
Languages : en
Pages : 551
Book Description
Based on Big Nerd Ranch’s popular iPhone Bootcamp class, iPhone Programming: The Big Nerd Ranch Guide leads you through the essential tools and techniques for developing applications for the iPhone, iPad, and iPod Touch. In each chapter, you will learn programming concepts and apply them immediately as you build an application or enhance one from a previous chapter. These applications have been carefully designed and tested to teach the associated concepts and to provide practice working with the standard development tools Xcode, Interface Builder, and Instruments. The guide’s learn-while-doing approach delivers the practical knowledge and experience you need to design and build real-world applications. Here are some of the topics covered: Dynamic interfaces with animation Using the camera and photo library User location and mapping services Accessing accelerometer data Handling multi-touch gestures Navigation and tabbed applications Tables and creating custom rows Multiple ways of storing and loading data: archiving, Core Data, SQLite Communicating with web services ALocalization/Internationalization "After many 'false starts' with other iPhone development books, these clear and concise tutorials made the concepts gel for me. This book is a definite must have for any budding iPhone developer." –Peter Watling, New Zealand, Developer of BubbleWrap
Publisher: Addison-Wesley Professional
ISBN: 0321706463
Category : Computers
Languages : en
Pages : 551
Book Description
Based on Big Nerd Ranch’s popular iPhone Bootcamp class, iPhone Programming: The Big Nerd Ranch Guide leads you through the essential tools and techniques for developing applications for the iPhone, iPad, and iPod Touch. In each chapter, you will learn programming concepts and apply them immediately as you build an application or enhance one from a previous chapter. These applications have been carefully designed and tested to teach the associated concepts and to provide practice working with the standard development tools Xcode, Interface Builder, and Instruments. The guide’s learn-while-doing approach delivers the practical knowledge and experience you need to design and build real-world applications. Here are some of the topics covered: Dynamic interfaces with animation Using the camera and photo library User location and mapping services Accessing accelerometer data Handling multi-touch gestures Navigation and tabbed applications Tables and creating custom rows Multiple ways of storing and loading data: archiving, Core Data, SQLite Communicating with web services ALocalization/Internationalization "After many 'false starts' with other iPhone development books, these clear and concise tutorials made the concepts gel for me. This book is a definite must have for any budding iPhone developer." –Peter Watling, New Zealand, Developer of BubbleWrap
Beginning Objective C
Author: James Dovey
Publisher: Apress
ISBN: 1430243694
Category : Computers
Languages : en
Pages : 390
Book Description
Objective-C is today's fastest growing programming language, at least in part due to the popularity of Apple's Mac, iPhone and iPad. Beginning Objective-C is for you if you have some programming experience, but you're new to the Objective-C programming language and you want a modern—and fast—way forwards to your own coding projects. Beginning Objective-C offers you a modern programmer's perspective on Objective-C courtesy of two of the best iOS and Mac developers in the field today, and gets you programming to the best of your ability in this important language. It gets you rolling fast into the sound fundamentals and idioms of Objective-C on the Mac and iOS, in order to learn how best to construct your applications and libraries, making the best use of the tools it provides— no matter what projects you plan to build. The book offers thorough introductions to the core tenets of the language itself and its primary toolkits: the Foundation and AppKit frameworks. Within its pages you will encounter a mine of information on many topics, including use of the file system and network APIs, concurrency and multi-core programming, the user interface system architecture, data modeling, and more. You'll soon find yourself building a fairly complex Objective-C based application, and mastering the language ready for your own projects. If you're new to programming altogether, then Apress has other Objective-C books for you such as our Learning and Absolute Beginner titles—otherwise, let your existing skills ramp you fast forwards in Objective-C with Beginning Objective-C so that you can start building your own applications quickly.
Publisher: Apress
ISBN: 1430243694
Category : Computers
Languages : en
Pages : 390
Book Description
Objective-C is today's fastest growing programming language, at least in part due to the popularity of Apple's Mac, iPhone and iPad. Beginning Objective-C is for you if you have some programming experience, but you're new to the Objective-C programming language and you want a modern—and fast—way forwards to your own coding projects. Beginning Objective-C offers you a modern programmer's perspective on Objective-C courtesy of two of the best iOS and Mac developers in the field today, and gets you programming to the best of your ability in this important language. It gets you rolling fast into the sound fundamentals and idioms of Objective-C on the Mac and iOS, in order to learn how best to construct your applications and libraries, making the best use of the tools it provides— no matter what projects you plan to build. The book offers thorough introductions to the core tenets of the language itself and its primary toolkits: the Foundation and AppKit frameworks. Within its pages you will encounter a mine of information on many topics, including use of the file system and network APIs, concurrency and multi-core programming, the user interface system architecture, data modeling, and more. You'll soon find yourself building a fairly complex Objective-C based application, and mastering the language ready for your own projects. If you're new to programming altogether, then Apress has other Objective-C books for you such as our Learning and Absolute Beginner titles—otherwise, let your existing skills ramp you fast forwards in Objective-C with Beginning Objective-C so that you can start building your own applications quickly.
Learning Cocoa with Objective-C
Author: Paris Buttfield-Addison
Publisher: "O'Reilly Media, Inc."
ISBN: 1491901780
Category : Computers
Languages : en
Pages : 463
Book Description
Get up to speed on Cocoa and Objective-C, and start developing applications on the iOS and OS X platforms. If you don’t have experience with Apple’s developer tools, no problem! From object-oriented programming to storing app data in iCloud, the fourth edition of this book covers everything you need to build apps for the iPhone, iPad, and Mac. You’ll learn how to work with the Xcode IDE, Objective-C’s Foundation library, and other developer tools such as Event Kit framework and Core Animation. Along the way, you’ll build example projects, including a simple Objective-C application, a custom view, a simple video player application, and an app that displays calendar events for the user. Learn the application lifecycle on OS X and iOS Work with the user-interface system in Cocoa and Cocoa Touch Use AV Foundation to display video and audio Build apps that let users create, edit, and work with documents Store data locally with the file system, or on the network with iCloud Display lists or collections of data with table views and collection views Interact with the outside world with Core Location and Core Motion Use blocks and operation queues for multiprocessing
Publisher: "O'Reilly Media, Inc."
ISBN: 1491901780
Category : Computers
Languages : en
Pages : 463
Book Description
Get up to speed on Cocoa and Objective-C, and start developing applications on the iOS and OS X platforms. If you don’t have experience with Apple’s developer tools, no problem! From object-oriented programming to storing app data in iCloud, the fourth edition of this book covers everything you need to build apps for the iPhone, iPad, and Mac. You’ll learn how to work with the Xcode IDE, Objective-C’s Foundation library, and other developer tools such as Event Kit framework and Core Animation. Along the way, you’ll build example projects, including a simple Objective-C application, a custom view, a simple video player application, and an app that displays calendar events for the user. Learn the application lifecycle on OS X and iOS Work with the user-interface system in Cocoa and Cocoa Touch Use AV Foundation to display video and audio Build apps that let users create, edit, and work with documents Store data locally with the file system, or on the network with iCloud Display lists or collections of data with table views and collection views Interact with the outside world with Core Location and Core Motion Use blocks and operation queues for multiprocessing
Learning Objective-C 2.0
Author: Robert Clair
Publisher: Addison-Wesley
ISBN: 0133047385
Category : Computers
Languages : en
Pages : 898
Book Description
Get Started Fast with Objective-C 2.0 Programming for OS X Mountain Lion, iOS 5.1, and Beyond Fully updated for Xcode 4.4, Learning Objective-C 2.0, Second Edition, is today’s most useful beginner’s guide to Objective-C 2.0. One step at a time, it will help you master the newest version of Objective-C 2.0 and start writing high-quality programs for OS X 10.8 Mountain Lion, iOS 5.1, and all of Apple’s newest computers and devices. Top OS X and iOS developer Robert Clair first reviews the essential object and C concepts that every Objective-C 2.0 developer needs to know. Next, he introduces the basics of the Objective-C 2.0 language itself, walking through code examples one line at a time and explaining what’s happening behind the scenes. This revised edition thoroughly introduces Apple’s new Automated Reference Counting (ARC), while also teaching conventional memory-management techniques that remain indispensable. Carefully building on what you’ve already learned, Clair progresses to increasingly sophisticated techniques in areas ranging from frameworks to security. Every topic has been carefully chosen for its value in real-world, day-to-day programming, and many topics are supported by hands-on practice exercises. Coverage includes · Reviewing key C techniques and concepts, from program structure and formats to variables and scope · Understanding how objects and classes are applied in Objective-C 2.0 · Writing your first Objective-C program with Xcode 4.4 · Using messaging to efficiently perform tasks with objects · Getting started with Apple’s powerful frameworks and foundation classes · Using Objective-C control structures, including Fast Enumeration and exception handling · Adding methods to classes without subclassing · Using declared properties to save time and simplify your code · Mastering ARC and conventional memory management, and knowing when to use each · Using Blocks to prepare for concurrency with Apple’s Grand Central Dispatch · Leveraging Xcode 4.4 improvements to enums and @implementation
Publisher: Addison-Wesley
ISBN: 0133047385
Category : Computers
Languages : en
Pages : 898
Book Description
Get Started Fast with Objective-C 2.0 Programming for OS X Mountain Lion, iOS 5.1, and Beyond Fully updated for Xcode 4.4, Learning Objective-C 2.0, Second Edition, is today’s most useful beginner’s guide to Objective-C 2.0. One step at a time, it will help you master the newest version of Objective-C 2.0 and start writing high-quality programs for OS X 10.8 Mountain Lion, iOS 5.1, and all of Apple’s newest computers and devices. Top OS X and iOS developer Robert Clair first reviews the essential object and C concepts that every Objective-C 2.0 developer needs to know. Next, he introduces the basics of the Objective-C 2.0 language itself, walking through code examples one line at a time and explaining what’s happening behind the scenes. This revised edition thoroughly introduces Apple’s new Automated Reference Counting (ARC), while also teaching conventional memory-management techniques that remain indispensable. Carefully building on what you’ve already learned, Clair progresses to increasingly sophisticated techniques in areas ranging from frameworks to security. Every topic has been carefully chosen for its value in real-world, day-to-day programming, and many topics are supported by hands-on practice exercises. Coverage includes · Reviewing key C techniques and concepts, from program structure and formats to variables and scope · Understanding how objects and classes are applied in Objective-C 2.0 · Writing your first Objective-C program with Xcode 4.4 · Using messaging to efficiently perform tasks with objects · Getting started with Apple’s powerful frameworks and foundation classes · Using Objective-C control structures, including Fast Enumeration and exception handling · Adding methods to classes without subclassing · Using declared properties to save time and simplify your code · Mastering ARC and conventional memory management, and knowing when to use each · Using Blocks to prepare for concurrency with Apple’s Grand Central Dispatch · Leveraging Xcode 4.4 improvements to enums and @implementation