range.contains()

code

// range.contains()
(10..<50).contains(50)    // false
(10...50).contains(50)    // true
("a"..."m").contains("giraffe")    // true

// ~= operator
10...100 ~= 50            // true: ~= means "contains"

📗 參考

• Hacking with Swift ⟩ How to check whether a value is inside a range

📘 手冊

• Swift ⟩ Sequence ⟩

  • contains(_:)