Category Archives for Swift

Type Casting in Swift

In object-oriented programming, type casting is used to treat an object as one of another type. In this article we will discuss how this works in Swift.

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Swift 2.0: API Availability Checking

Swift is all about safety. With the introduction of the automatic API availability checking in Swift 2.0, there is another great new feature that makes your apps more stable.

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Should You Use Objective-C or Swift?

At the moment Apple has two major programming languages. So should you use Objective-C or Swift?

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Swift: Generics

Objective-C lacks one very important feature: Generics. Luckily, Swift has this feature. Generics enable you to declare functions, classes and structs that work with different types.

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Constants In Swift

In Swift there are two types of values: constants and variables. This is very common for a programming language – however, there is one important difference in using constants in Swift.

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Swift: Access Control

Encapsulation is one of the most important object-oriented design principles: It hides the internal states and functionality of objects.  You can achieve this by using the access control features of

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Swift: Enums

An enum is a data type that has a finite set of possible values. In this post we discuss will the most important aspects of enums in Swift.

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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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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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Singletons in Swift

Some people love it, some people hate it – but in the end everybody uses it: the singleton pattern. It is used if just one instance of an object is desired. For example, that could be a database

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One Year of Swift

One year ago Apple introduced Swift, which was a very surprising move.  What remains after one year?

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Swift 2.0: defer

defer is another new keyword in Swift. With this statement you can declare clean-up code, that is executed just before the current scope ends. For example, this scope can be a function or a loo...

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