Learn SwiftUI (Day 1/100)

Swift

• Variable


• Constants


• String and multiple-line string


• Integer


• Double
  

import Cocoa

// "var" means make a new variable
var greeting = "Hello, playground"
print(greeting)
var name = "hello"
print(name)
name = "world"
print(name)

// let: Declares a constant that cannot be changed once it has been set, i.e., an immutable variable
let lang = "python"
print(lang)
// lang = "java" // Error: cannot assign to value
// print(lang)

/*
 Best practice suggests that you should default to using let to …

hello import integer learn line multiple playground python set string swift swiftui world