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50 lines
1.1 KiB
Go
50 lines
1.1 KiB
Go
// Provides a Hello world example with tests
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package main
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import (
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"fmt"
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)
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// Constants can be grouped in a block.
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// Add a line between related consts for
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// readbility
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const (
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french = "French"
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spanish = "Spanish"
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englishHelloPrefix = "Hello, "
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spanishHelloPrefix = "Hola, "
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frenchHelloPrefix = "Bonjour, "
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)
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// Hello prints the string "Hello, world"
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func Hello(name string, language string) string {
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if name == "" {
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name = "World"
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}
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return greetingPrefix(language) + name
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}
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// greetingPrefix Using a named return value will initialize a "zero value"
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// variable which as you can see below can be assigned to.
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// this will display in Go Doc for your function.
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// Lower case letter functions are "private" functions. They are internal to implementation.
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func greetingPrefix(language string) (prefix string) {
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switch language {
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case french:
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prefix = frenchHelloPrefix
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case spanish:
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prefix = spanishHelloPrefix
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default:
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prefix = englishHelloPrefix
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}
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// we use names return value in function signature
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return
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}
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func main() {
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fmt.Println(Hello("world", ""))
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}
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