📘return

Swift ⟩ flow control ⟩ control transfer ⟩ return

🧨 雷區

cannot use return in the body of a for...in loop, except that the loop is inside a function.

• replit ( 👉 see: for...in vs. forEach )

⛔ error: return invalid outside of a func.

for n in 1...10 {
    if n == 3 { return }    // ⛔ error
    //          ^^^^^^
    // ⛔ error: return invalid outside of a func
}

👥 相關

• return value

• Implicit Return

📘 手冊

• Control Transfer Statements