From minimizing pointer use to strong type checking at compile time, Swift is a great language for secure development. But that means it’s tempting to forget about security altogether. There are still vulnerabilities, and Swift is also enticing to new developers who haven’t yet learned about security.

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Traditional desktop app development is dominated by large-scale software companies with huge workforces, sometimes scattered around the globe. However, the mobile app development industry is quite different. Its ecosystem has created a new breed of small-scale and highly efficient developers. Its dominant players are powered by innovation and efficiency, rather than by the number of heads on the payroll. Even an individual developer can produce a killer app that has millions of downloads in the app stores.

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The main purpose of a digital signature is to verify the integrity of some information. For a simple example, let’s say you had a file that was transferred over the network and you want to check that the entire file was transferred correctly. In that case, you would use a checksum.

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MVC stands for Model-View-Controller, and it’s a widespread architectural pattern for software development. It’s the de facto design pattern for Cocoa development, and it has been for many, many years. Most of us can’t imagine building applications without it. Both UIKit (iOS) and AppKit (macOS) make frequent use of MVC. It almost seems as if we don’t have another option to build applications for iOS, tvOS, macOS, and watchOS.

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In this tutorial, I’ll show you how to use a powerful yet elegant on-device database solution for your iOS apps: Realm Mobile Database. An alternative to Apple Core Data or SQLite with object-relational mapping (ORM), Realm Mobile Database offers developers an easier and more natural way to store and query data.

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