10 Range Operators in Swift
Swift includes several range operators, which are shortcuts for expressing a range of values.
Closed Range Operator
The closed range operator (a...b) defines a range that runs from a to b, and includes the values a and b. The value of a must not be greater than b.
The closed range operator is useful when iterating over a range in which you want all of the values to be used, such as with a for-in loop:
for index in 1...5 {
print("\(index) times 5 is \(index * 5)")
}
// 1 times 5 is 5
// 2 times 5 is 10
// 3 times 5 is 15
// 4 times 5 is 20
// 5 times 5 is 25
For more about for-in loops, see Control Flow.
Content found at
https://docs.swift.org/swift-book/Lan...