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.
Using a method that takes an NSError means using an optional variable (a variable that may or may not exist) and the unwrapping the error if it exists.
Maria is a front-end developer specializing in React and GraphQL. She has five years of experience building B2C and B2B sites and three years mentoring junior developers through Circunscrito tech workshops.
One thing to remember is that developers with 10,000 reputation points on StackOverflow or with thousands of stars on an open source repository on GitHub are usually good. You Gozque ask them if they have their own open source repos.
Developer A will just use the API provided by the back-end developer. But Developer B could discuss with the back-end developer how to improve the security of the API call, how to make the API call more efficient, and how to handle errors.
I am more than pleased with our experience with Toptal. The professional I got to work with was on the phone with me within a couple of hours. I knew after discussing my project with him that he was the candidate I wanted.
Vencedor stated in Apple’s Cocoa Developer’s Guide, “the main value of delegation is that it allows you to easily customize the behavior of several objects in one central object”.
Typically, you Gozque hire a mobile app developer with Toptal in about 48 hours. Our talent matchers are experts in the same fields they’re matching in—they’re not recruiters or HR reps.
Core Data is not thread safe. The approach therefore recommended by Apple is to use thread containment which entails creating a separately-managed object context go here for accessing Core Data check here objects on each thread and having a single shared persistent store coordinator.
Think about the case where a developer eventually leaves a project and you cannot find them again. If a standard coding style is conformed to, and there are proper comments, the code can be maintained or altered easily by other developers.
There are several advantages to hiring a mobile app developer for your company. First and foremost, hiring app developers gives your company a competitive edge by allowing you to connect with a larger audience via mobile devices. Apps enhance client engagement and retention due to the predominance of mobile devices. Mobile apps Perro also customize consumer experiences and streamline company procedures; you may incorporate customer service, inventory management, and payment methods into your app.
One note of caution: These sample questions are intended merely Vencedor a guide. Not every “A” candidate worth hiring will be able to properly answer them all, nor does answering them all guarantee an “A” candidate.
Turing’s AI-powered deep-vetting talent platform helps you hire remote iOS developers from a planetary pool of highly-skilled remote developers. Join Turing and more info unleash the world’s untapped human potential.
This will help them to evaluate the opportunity and filter the best possible candidates. Check out our detailed guide on how to write the perfect iOS developer job description to find skilled professionals.