learn-go-with-tests/hello.go

package main

import "fmt"

const englishHelloPrefix = "Hello, "

func Hello(name string, language string) string {
	if name == "" {
		name = "World"
	}

	if language == "Welsh" {
		return "Helo, " + name
	}

	return englishHelloPrefix + name
}

func main() {
	fmt.Println(Hello("Oliver", ""))
}