str.split()

💾 程式

let str = " rabbit,  dog, cat, elephant , elf "

// ⭐️ single separator
str.split(separator: ",")
// ⭐️ Note: spaces are NOT removed.
// [" rabbit", "  dog", " cat", " elephant ", " elf "]

// ⭐️ multiple separators
str.split {$0 == "," || $0 == " "}
// ["rabbit", "dog", "cat", "elephant", "elf"]

🔸 定義

// str.split(separator: ",")
func split(
    separator: Character,         // ⭐️ 單一個 Character
    maxSplits: Int = Int.max, 
    omittingEmptySubsequences: Bool = true
) -> [Substring]

// str.split() { char in ... }
func split(
    maxSplits: Int = Int.max, 
    omittingEmptySubsequences: Bool = true, 
    // ⭐️ 可使用多個 Character
    whereSeparator isSeparator: (Character) throws -> Bool
) rethrows -> [Substring]

📘 手冊

• Foundation (NSString bridged) ⟩ String ⟩

  • string.components(separatedBy: CharacterSet) → [String]

  • string.components(separatedBy: String) → [String]

• Swift ⟩ String ⟩

  • .split(separator:...) -> [Substring]

  • .split(...:whereSeparator:) -> [Substring]

📗 參考

• Sarunw ⟩ How to split a string into an array of substrings in Swift

👥 相關

• arr.split(where:) splits arrays into subarrays.

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