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Objective-C

  • Swift
    Swift from Scratch: Access Control and Property ObserversPreview image@2x
    89 shares
    In the previous tutorial, we added the ability to create to-do items. While this addition has made the application a bit more useful, it would also be convenient to add the ability to mark items as done and delete items. That's what we'll focus on in this tutorial.Read More…
  • Swift
    Swift from Scratch: Delegation and PropertiesPreview image@2x
    119 shares
    In the previous tutorial, you created your first Swift project in Xcode, a simple to-do application. In this installment of Swift from Scratch, we're going to add the ability to create to-do items. Along the way, you will learn about actions, delegation, and properties.Read More…
  • Swift
    Swift from Scratch: Inheritance and ProtocolsPreview image@2x
    138 shares
    While playgrounds are a great tool to play with Swift and learn the language, it's time to move on and create our first Swift project in Xcode. In this article, we're going to create the foundation of a simple to-do application using Xcode and Swift. Along the way, we'll learn more about object-oriented programming and we'll also take a closer look at the integration between Swift and Objective-C.Read More…
  • Swift
    Quick Tip: Enumerations in SwiftPreview image@2x
    122 shares
    Enumerations are a common design pattern in many programming languages. While you may be familiar with enumerations in C and Objective-C, Swift's implementation of enumerations is significantly more powerful and flexible. In this quick tip, you'll learn what's special about enumerations in Swift, how to use them in your projects, and what makes them so powerful.Read More…
  • Swift
    Swift from Scratch: An Introduction to Classes and StructuresPreview image@2x
    145 shares
    In the previous articles of this series, we covered the basics of the Swift programming language. If you followed along, you should now have a solid understanding of variables, constants, functions, and closures. It's now time to use what we've learned so far and apply that knowledge to the object-oriented concepts of Swift.Read More…
  • iOS 8
    iOS 8: How to Build a Simple Action ExtensionExtensions
    149 shares
    Are you excited about extensions in iOS 8? Want to learn how to build an extension for your own iOS app? Then join us in this simple tutorial that will get you up to speed on Action extensions. We'll build a simple app and extension from scratch, and walk you through the whole process so you can start experimenting with your own ideas.Read More…
  • Swift
    Swift from Scratch: ClosuresPreview image@2x
    118 shares
    If you've worked with blocks in C/Objective-C or lambdas in Ruby, then you won't have a hard time wrapping your head around the concept of closures. Closures are nothing more than blocks of functionality that you can pass around in your code. In this article, you will learn everything you need to know about closures to get you started.Read More…
  • Swift
    Swift from Scratch: Function Parameters, Types, and NestingPreview image@2x
    139 shares
    In the previous article, we explored the basics of functions in Swift. Functions, however, have a lot more to offer. In this article, we will continue our exploration of functions and look into function parameters, nesting, and types.Read More…
  • Swift
    Swift from Scratch: An Introduction to FunctionsPreview image@2x
    190 shares
    To get anything done in Swift, you'll need to learn the ins and outs of functions. Functions are exceptionally powerful and flexible in Swift. The basics are simple—especially if you've worked with other programming languages before—but because of Swift's flexible syntax it can easily become complex if you're not familiar with the basics. In this article, we'll focus on those basics first.Read More…
  • Swift
    Swift from Scratch: Optionals and Control FlowPreview image@2x
    175 shares
    In the previous articles, you learned some of the basic concepts of the Swift programming language. If you've programmed before, I'm sure you saw a few similarities with other programming languages, such as Ruby, JavaScript, and Objective-C. In this article, we zoom in on control flow in Swift. Before we can discuss control flow in more detail, we need to take a look at a concept that is new to most of you, optionals. Optionals are another safety feature of Swift. At first, it may look like a hassle to use optionals, but you'll quickly learn that optionals will make your code much safer.Read More…
  • Swift
    Swift from Scratch: Collections and TuplesPreview image@2x
    184 shares
    In the previous article, you learned about variables, constants, and some of the common data types, such as integers, floats, and strings. In this article, we zoom in on collections. Swift's standard library defines two collection types, arrays and dictionaries.Read More…
  • Swift
    Swift from Scratch: Variables and ConstantsPreview image@2x
    173 shares
    In the first article of Swift from Scratch, you learned about Xcode playgrounds and wrote your first lines of Swift. In this article, we start learning the fundamentals of the Swift programming language by exploring variables and typing. We will also take a close look at constants and why you're encouraged to use them as much as possible.Read More…
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