sorted_first_last.md

Pattern: Use of sorted().first/sorted().last instead of min()/max()

Issue: -

Description

Prefer using min() or max() over sorted().first or sorted().last

Examples of correct code:

let min = myList.min()


let min = myList.min(by: { $0 < $1 })


let min = myList.min(by: >)


let min = myList.max()


let min = myList.max(by: { $0 < $1 })

Examples of incorrect code:

↓myList.sorted().first


↓myList.sorted(by: { $0.description < $1.description }).first


↓myList.sorted(by: >).first


↓myList.map { $0 + 1 }.sorted().first


↓myList.sorted(by: someFunction).first


↓myList.map { $0 + 1 }.sorted { $0.description < $1.description }.first


↓myList.sorted().last


↓myList.sorted().last?.something()


↓myList.sorted(by: { $0.description < $1.description }).last


↓myList.map { $0 + 1 }.sorted().last


↓myList.sorted(by: someFunction).last


↓myList.map { $0 + 1 }.sorted { $0.description < $1.description }.last


↓myList.map { $0 + 1 }.sorted { $0.first < $1.first }.last

Further Reading

• SwiftLint - Min or Max over Sorted First or Last