Swift 문자열 합치기(Concatenation)

1. Concatenation

let address = "Seoul" + ", " + "Yongsan" + ", " + "Hangangro"
print(address)
 -> "Seoul, Yongsan, Hangangro"

2. String Interpolation

let city = "Seoul
let country = "South Korea" 

let interpolatedAddress = "\(city)"
print(interpolatedAddress)
 -> "Seoul"

interpolatedAddress = "\(city), \(country)"
print(interpolatedAddress)
 -> "Seoul, South Korea