// Booleans
var isMultiple = 120.isMultiple(of: 3)
// false, true, flip it with !
isMultiple.toggled()
// isMultiple is now flipped, so it's false.
// Join Strings
// Concat, "Hello " + "World" works
// Concats are slow though... imagine "A" + "B" + "C"... so on...
// This means you add each string individual, so "AB" + C... "ABC" + D...
// This is where String interpolation comes in.
let number = 11
let message = "Hey! My favorite number is \(number)"
// If you didnt do this and concat, you will have to do String(number)
// You can also do calculations like \(number * 5) in the string.
//Summary:
// let for const, var for variables (Different than JS)
// Other types: Int, Double, String, Boolean, and their functionality like properities like count instead of length and methods like uppercased()
let tempInCelsius = Double(20)
let tempInFahrenheit = (tempInCelsius * Double(9))/Double(5) + Double(32)
print("Celsius is \(tempInCelsius)")
// My code after, main thing is swift autoconverts, so if you use a double it will stay a double.
let tempInCelsius = 21.0
let tempInFahrenheit = (tempInCelsius * 9)/5 + 32
print("Celsius is \(tempInCelsius)")
print("Fahrenheit is \(tempInFahrenheit)")See ya, —Brody