Swift文字列検索/置換まとめ

何度も忘れては検索してしまうため、まとめ。随時更新。

対象文字列

var targetString = "My name is Swift Ganbaru Man, I'm a guy studying Swift."

特定の文字列で始まっているか？

targetString.contains("Swift") // true
targetString.contains("Python") // false

特定の文字列で終わっているか？

targetString.hasSuffix(".") // true
targetString.hasSuffix("!!") // false

全体置換

// My name is Python Ganbaru Man, I'm a guy studying Python.
targetString.replacingOccurrences(of: "Swift", with: "Python")

// My name is Swift Ganbaru Woman, I'm a lady studying Swift.
targetString.replacingOccurrences(of: "Man", with: "Woman").replacingOccurrences(of: "guy", with: "lady")

一つ目だけ置換

let range = targetString.range(of: "Swift")
// My name is Objective-C Ganbaru Man, I'm a guy studying Swift.
targetString.replacingCharacters(in: range!, with: "Objective-C")