func sayHello() {
print("Hello")
}
sayHello() // "Hello"
func square (num: Int) -> Int {
return num * num
}
square(num: 20) // 400
func greet(person: String) -> String {
let greeting = "Hello, " + person + "!"
return greeting
}
greet(person: "xx") // "Hello, xx!"
func minMax(array: [Int]) -> (min: Int, max: Int) {
var currentMin = array[0]
var currentMax = array[0]
for value in array[1..<array.count] {
if value < currentMin {
currentMin = value
} else if value > currentMax {
currentMax = value
}
}
return (currentMin, currentMax)
}
let bounds = minMax(array: [8, -6, 2, 109, 3, 71])
print("min is \(bounds.min) and max is \(bounds.max)")
reference:
https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/
https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/Functions.html
