Objective-C / Swift Tutorials, Resources and Competitions for the iPhone Developer

Objective-C: Validate e-mail address

This Quick iOS Development tip is a piece of code that I use regularly to validate an email address.

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Objective-C: Property Attribute Reference Guide

This tutorial is intended to be a reference guide to the property attributes found in the iOS development programming language Objective-C.

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How to create rounded avatars in your iOS Application

Rounded avatars seem to be very fashionable these days. Even Apple adopted the rounded images for contacts. If you’re wondering how to achieve this in your app here is the answer.

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NSString – Objective-C Class Reference

As we’ve seen before, an NSString is an object that represents a block of text. The name presumably comes from the fact that it is a string of characters, though that is just supposition, but does make it slightly easier to remember.

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Constants in Objective C

When you’re building an app you usually need some values to remain the same for the whole runtime of the app. Instead of using those values everywhere inside your app it is better to define a constant and use the constant instead. It will make your life easier when you want to change the value everywhere in the code and if you give it a good name it will make your code more readable. In this post we’re going to ...

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Create an Asynchronous URL connection as an NSOperation

Recently I read a that showed the disassembly of +[NSURLConnection sendAsynchronousRequest:queue:completionHandler:] mainly as a simple call to +[NSURLConnection sendSynchronousRequest:returningResponse:error:] dispatched on a global queue.

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