When implementing generic algorithms in Swift, follow these best practices to improve code clarity and performance: 1. Place type constraints directly on associated types rather than at the protocol level: ```swift // Not recommended protocol SortingAlgorithm where Element: Comparable { associatedtype Element mutating func sort(_ array: inout [Element]) } // Recommended protocol SortingAlgorithm { associatedtype Element: Comparable mutating func sort(_ array: inout [Element]) } ``` 2. For filtering operations and predicates, evaluate whether a function type would be more appropriate than a custom protocol: ```swift // Using a protocol - more flexible but verbose protocol FilterPredicate { associatedtype Element func shouldKeep(_ item: Element) -> Bool } // Using a function type - often simpler for basic cases func filter(_ items: [T], predicate: (T) -> Bool) -> [T] { return items.filter(predicate) } ``` 3. Start with concrete implementations first, then extract protocols once patterns emerge. This helps you identify the minimal set of requirements needed for your generic algorithm to work effectively.