Contact

Swift

let username: String = "andrew"
let domain:   String = "andrewchidden.com"
let email:    String = "\(username)@\(domain)"

Objective-C

NSString *username = @"andrew";
NSString *domain   = @"andrewchidden.com";
NSString *email    = 
    [NSString stringWithFormat:@"%@@%@", username, domain];

JavaScript

const username = "andrew"
const domain   = "andrewchidden.com"
const email    = `${username}@${domain}`

Python

username = "andrew"
domain   = "andrewchidden.com"
email    = "{}@{}".format(username, domain)