أساسيات break و continue

ما الذي يفعله break

for n in 1...10 {
    if n == 4 {
        break
    }
    print(n)
}
print("done")

ما الذي يفعله continue

for n in 1...6 {
    if n % 2 == 0 {
        continue
    }
    print(n)
}

break مقابل continue

for n in 1...5 {
    if n == 3 { continue }
    print("kept", n)
}

break في حلقة while

var i = 0
while true {
    if i >= 3 {
        break
    }
    print(i)
    i += 1
}

يتخطى continue العمل

let words = ["apple", "", "banana", "", "cherry"]
for w in words {
    if w.isEmpty {
        continue
    }
    print(w)
}

الخروج المبكر عند العثور

let nums = [4, 8, 15, 16, 23, 42]
var found = -1
for n in nums {
    if n > 15 {
        found = n
        break
    }
}
print("first over 15:", found)

break في repeat-while

var count = 0
repeat {
    count += 1
    if count == 2 { break }
} while count < 10
print(count)

العد باستخدام continue

var evens = 0
for n in 1...10 {
    if n % 2 != 0 { continue }
    evens += 1
}
print("even count:", evens)

break بعد التجميع

let costs = [10, 20, 30, 40]
var total = 0
for c in costs {
    total += c
    if total >= 50 { break }
}
print(total)

continue وcontinue مرة أخرى

for n in 1...10 {
    if n < 3 { continue }
    if n > 7 { continue }
    print(n)
}

سهولة القراءة

let scores = [40, 55, 70, 0, 90]
for s in scores {
    if s == 0 { continue }
    print("valid score:", s)
}

تحقق سريع

مراجعة

for n in 1...5 {
    if n == 2 { continue }
    if n == 4 { break }
    print(n)
}