0x00 Lesson
Swift supports operator overloading, which is a fancy way of saying that what an operator does depends on the values you use it with. For example, + sums integers like this:
let meaningOfLife = 42
let doubleMeaning = 42 + 12
But + also joins strings, like this:
let fakers = "Fakers gonna "
let action = fakers + "fake"
You can even use + to join arrays, like this:
let firstHalf = ["John", "Paul"]
let secondHalf = ["George", "Ringo"]
let beatles = firstHalf + secondHalf
Remember, Swift is a type-safe language, which means it won’t let you mix types. For example, you can’t add an integer to a string because it doesn’t make any sense.
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