Filter, Map, Reduce, CompactMap, FlatMap - Swift - iOS Dev Interview Questions

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Explaining Filter, Map and Reduce in Swift is a very common iOS Dev interview question. In this tutorial I'll walk you through how Filter, Map and Reduce work and how to chain them together for more complex examples. I also show you how compact map and flat map work.

This tutorial was created using Xcode 14 and iOS 16.

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   • Swift Interview Tips  

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My Closures Video:
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Book and learning recommendations that help out the channel if you decide to purchase (Affiliate Links):

Paul Hudson's Hacking With Swift:
https://gumroad.com/a/762098803

Donny Wals - Combine:
https://gumroad.com/a/909014131

Mark Moeyken’s SwiftUI Books:
www.bigmountainstudio.com/swiftui-views-book/fzc51

Objc.io Books (Thinking in SwiftUI & Advanced Swift):
https://gumroad.com/a/656585843

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Timestamps:
0:00 - Filter, Map, Reduce
0:45 - Filter
3:02 - Map
4:35 - Reduce (simple)
6:05 - Reduce (on property)
7:17 - Chaining
10:18 - Compact Map
11:21 - Flat Map