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Lenses and Prisms in Swift: a pragmatic approach
The concept of functional lens has become pretty popular in functional programming circles, and there are already good contributions for applying lenses to other, traditionally imperative/OO contexts, like Javascript. Brandon Williams has done an excellent job in introducing lenses to the Swift community, and in showing practical examples when working with something like UIView, a radically OOP construct that an iOS developer has to work with on a daily basis.
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Blog posts
The 30 Auto Layout Best Practices will give you a head start on working through quirks in Xcode 9 and strategies that will allow you to work faster and more efficiently. 

Agnes Vasarhelyi explains what troubles she had when implementing background transfer support into their Topology Eyewear app.

Chronology is an attempt to build a better date and time API for Swift on top of the constructs provided by Foundation.

A collection of Swift tips & tricks that John Sundell shared on Twitter.

Curated by Infinum's iOS team.
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