Archive Monthly Archives: July 2015

The Best iOS Development Resources

There are a lot of very interesting iOS development resources on the internet. This is a list of the best ones.

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Optionals in Swift

Every variable can be declared as a so-called optional in Swift. As an optional, the variable is allowed to become nil what is equivalent to the absence of a value. 

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Objective-C: Nullability

One of the biggest differences between Objective-C and Swift is the handling of nullability. But since Xcode 6.3 there are two new keywords in Objective-C that improve their interoperability: nullable and nunnull.

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Error Handling in Swift 2.0

Swift 2.0 has a new way of error handling. It uses a do-try-catch  syntax,  which is the replacement for NSError .  In this post we will discuss how to use this new syntax.

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Using Custom Fonts

Out of the box iOS provides you a rich set of fonts. But sometimes there is the need to add another font to your project. For example, this could be one of the Google Fonts, which are open source.  In this post we look how you can add a custom font to your project and how you can […]

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The MVC-Trap

The fundamental software architecture pattern in iOS and Mac OS  development is the Model-View-Controller pattern (MVC). The idea of this pattern is, that each of these three layers has a clear and precise role, which leads to more reusable code and less bugs. However, in iOS development there is a drastic tendency that the controller layer […]

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Loading a View from a XIB

Generally, there are two ways to layout views: building it in interface builder or by coding. Both ways have their applications, but in many cases the interface builder way is more comfortable. If you layout a view in the interface builder, then it is most times associated with a view controller. But it is also possible to […]

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Container ViewController

Basically, there are two types of view controllers: Content view controllers and container view controllers. Container view controllers are used to manage some set of content view controllers and present them as so-called child view controllers, whereas content view controllers are used to present – surprise – some content. Most of the times, container view […]

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Objective-C: Lightweight Generics

Since Xcode 7 there are so-called “Lightweight” Generics in Objective-C. The biggest benefit of this feature is a better interoperability between Objective-C and Swift.

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