Lesson 5: Joining Strings - Intro to Swift

Joining Strings Glue two pieces of text together with +.

1let first = "Coding"

2let second = "is fun"

3print(first + " " + second)

Terminal

$ swift main.swift

Coding is fun

Every line, explained

let first = "Coding": let creates a constant: a named box whose value is set once and can never change. Swift people reach for let by default: if a value never needs to change, locking it down prevents accidents.
let second = "is fun": let creates a constant: a named box whose value is set once and can never change. Swift people reach for let by default: if a value never needs to change, locking it down prevents accidents.
print(first + " " + second): Using + between Strings glues them together (concatenation). + adds no space by itself, so we glue a " " (a space) in the middle.