We’ve spent the last two episodes diving deep into the world of functional setters and we’ve seen how they allow us to manipulate large data structures with precision and composition. This is only half of the picture! What about getters? Let’s explore how we access data from our structures, explore how getters compose, and see how key paths may further aid us along the way!
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References
SE-0249: Key Path Expressions as Functions
Stephen Celis & Greg Titus • Mar 19, 2019A proposal has been accepted in the Swift evolution process that would allow key paths to be automatically promoted to getter functions. This would allow using key paths in much the same way you would use functions, but perhaps more succinctly:
users.map(\.name).
0008-getters-and-key-paths