func greet(person: String, alreadyGreeted: Bool) -> String {
if alreadyGreeted {
return "Hello again, " + person
} else {
return "Hello, " + person
}
}
print(greet(person: "Tim", alreadyGreeted: true))
// Prints "Hello again, Tim!"
func greet(person: String) {
print("Hello, \(person)!")
}
greet(person: "Dave")
// Prints "Hello, Dave!"
func printAndCount(string: String) -> Int {
print(string)
return string.count
}
func printWithoutCounting(string: String) {
let _ = printAndCount(string: string)
}
printAndCount(string: "hello, world")
// prints "hello, world" and returns a value of 12
printWithoutCounting(string: "hello, world")
// prints "hello, world" but does not return a valu
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)")
// Prints "min is -6 and max is 109"
func minMax(array: [Int]) -> (min: Int, max: Int)? {
if array.isEmpty { return nil }
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)
}
func greeting(for person: String) -> String {
"Hello, " + person + "!"
}
print(greeting(for: "Gilang"))
// Prints "Hello, Gilang!"
func anotherGreeting(for person: String) -> String {
return "Hello, " + person + "!"
}
print(anotherGreeting(for: "Gilang"))
// Prints "Hello, Gilang!"
