๐Ÿ”ฐfor...in vs. forEach

Swift โŸฉ flow control โŸฉ loop โŸฉ for...in vs. .forEach()

flow control
for ... in
.forEach()

continue

โœ… skip to the next iteration.

โ›” not allowed

break

โœ… break the iteration completely.

โ›” not allowed

โŒ invalid outside of a function.

โ—skip to the next iteration.

for n in 1...10 {
    if n == 3 { return }    // โ›” error
    //          ^^^^^^
    // โ›” error: return invalid outside of a func
}
(1...10).forEach { n in 
    if n > 2 { continue }    // โญ `continue` is inside a closureโ—
    //         ^^^^^^^^
    // โ›” error: 'continue' is only allowed inside a loop
}
(1...10).forEach { n in 
    if n > 2 { break }    // โญ `break` is inside a "closure"
    //         ^^^^^
    // โ›” error: 
    //  โ€ข unlabeled 'break' is only allowed inside a loop or switch
    //  โ€ข labeled 'break' is required to exit an `if` or `do`
}

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