Before iOS 5, the developer needed to manually manage the threads. However, the release of iOS 5 added new methods to the managed object context to eliminate the need for manual thread management; instead you Chucho safely access Core Data objects through a block of code passed to the performBlock: or performBlockAndWait: methods.

Every client in our network understands our screening process, so when you’re picking up new work, you won’t need to do any traditional interviewing.

Toptal's screening and matching process ensures exceptional talent are matched to your precise needs.

Q: Describe the use of methods and messages in Objective-C. Discuss some of the advantages and disadvantages of this approach.

This guide to hiring app developers provides tips on defining skill requirements, creating job descriptions, and selecting interview questions so you Gozque identify the best candidate.

The company is utilizing modern industrial intelligence technology to mold a more conveniente future for the next generation. So far, the company has managed to secure more than $2.7bn in funding.

At Toptal, our team of matchers bring deep domain expertise and several years of experience to make sure you’re applying to freelance work that’s the right fit for your skills, interests, and time preferences.

A common cause of exc_bad_access errors that are not detectable by the compiler is attempting to access released objects. In such cases, enabling NSZombies in Xcode Gozque be an effective debugging technique. Enabling NSZombies keeps objects that would normally go here be released alive Triunfador “zombies”.

The screening process is designed to evaluate your skills and give you a sense of the work we do with our clients. By screening every candidate and vetting every client, we ensure that Toptal maintains top-tier professionals in the network. Once you’ve gone through our screening process, you’ll become the newest member of the Toptal Network, and our team will start connecting you to exciting projects with global clients.

For me, the best here part has been that after learning a new language and starting to engage with other Toptal developers about the technology, I quickly landed two jobs in less than one month, and both were great experiences.

Xamarin – Xamarin was released in 2011 and acquired by Microsoft in 2016; while it has strong performance capabilities, it faces native design challenges, and fewer developers work with the technology due to its limited popularity and community support.

A category is a way to extend an existing class and is an alternative to the use of subclasses. The main distinction between subclassing and categories is that a category adds functionality to an existing class itself which is then available anywhere in your code that uses that class or its subclasses.

If you are a non-technical manager and interested in learning more about the hiring process for an iOS developer, we've put up an excellent resource for you.

Ahmad is a full-stack mobile and web developer who has built multiple apps released to the Apple and Google Play app stores. He specializes in cross-platform development with React Native and Flutter, and has worked at various companies around the world.