Alex continues to cover his article iOS Interview Questions For Senior Developers in 2020.

Alex talks about an article he recently published - "iOS Interview Questions For Senior Developers in 2020".

Alex talks about iOS system design interview, what to expect, what's important to focus on and what complexity a potential e-commerce application might have.

Alex rants about data structure and algorithms interviews mobile developers have to go through as they interview for jobs. Algo problems is never something we solve building iOS application then why do we have to be subjected to those questions on interviews?

Alex talks to Jeff Gilbert about VIPER architecture, how it came to be and how this architecture helps scale iOS codebases. Jeff is the author of VIPER.

Alex explains how overusing extensions and protocol extensions in Swift leads to unpredictable runtime bugs.

When and where should optionals be used? What are the advantages and disadvantages of optionals? Before Swift, iOS developers wrote their apps using Objective-C. In Objective-C, programmers could send messages to nil without the program crashing and in some cases was considered a feature. However, sometimes objects were unexpectedly nil and the program would incorrectly execute. Today, Swift uses optionals to more explicitly handle the case when an object is nil.

Alex interviews Rody Davis about Flutter, a cross platform framework for iOS and Android development. They also address cross platform development issues Dropbox experienced with their mobile apps.

Recently, Dropbox published a blog illustrating the costs & overhead of using C++ to code share between iOS and Android. The author, Eyal Guthmann from Dropbox, joins us to elaborate more on the topic. Was the problem C++? Why couldn't Dropbox simply hire more C++ developers? Why not React Native or Flutter? Is cross platform mobile development simply not viable?