In this article from Parse, Richard Ross defines how you can fix and implement thread safety issue in a simple manner. He shows clean and safe way to handle concurrency and race conditions in iOS.
Here's an interesting read to identify bugs when you developing new code. In this article Giovanni Lodi shows how to fix bug for using Unit and acceptance tests as a tool.
Benedikt shows a number of way to use Enum in swift like nesting, pattern matching, associated value and hierarchically data.
In this article explain how to get better unit testing with Swift. You have to take care of his dependencies on some points like Protocols, inject static, their parameters, value type and some other validation etc.
Functional animation is an important toolbox in ux design.This article explain different way for convey his user with animation, if animation in design performs logical and specific action.
This is really well written and thorough article about ux design and how you use different tools in design is explained here.
Great commentary on "minimalist design" from Matthew in this article. If you are thinking about designing a minimalist interface, read this blog to avoid pitfalls.
If you are still wondering why Apple came up with San Francisco font, here is a great explanation.
Ravi shows how to use Snackbar introduced with Material Design.
Take a look at this article and learn how to create image gallery app using Glide framework and ViewPager Template in detail for Android.
Chris Stewart shows the right way to implement Splash Screen in your app.
From designing for Bigger phone screens to Layered Layouts to Smarter Prototyping, this is a great article on the latest design trends.
Here's how Chris Basha went about designing Twitter app concept. Great article on the thought process involved while designing.