Articles, podcasts and news about Swift development, by John Sundell.

Using typealiases to reduce the length of method signatures

Published on 23 Jan 2017

One thing that I find really useful in Swift is to use typealiases to reduce the length of method signatures in generic types:

public class PathFinder<Object: PathFinderObject> {
    public typealias Map = Object.Map
    public typealias Node = Map.Node
    public typealias Path = PathFinderPath<Object>
    
    public static func possiblePaths(
        for object: Object,
        at rootNode: Node,
        on map: Map
    ) -> Path.Sequence {
        return .init(object: object, rootNode: rootNode, map: map)
    }
}

Support Swift by Sundell by checking out this sponsor:

Essential Developer

Essential Developer: Learn the most up-to-date techniques and strategies for testing new and legacy Swift code in this free practical course for developers who want to become complete senior iOS developers. This virtual event includes lectures, mentoring sessions, and step-by-step instructions. Click to learn more.