Exercises & activities from the go workshop provided by Packt: https://courses.packtpub.com/courses/go
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47 lines
694 B
47 lines
694 B
package main
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import (
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"fmt"
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"os"
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)
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func getUsers() map[string]string {
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return map[string]string{
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"305": "Sue",
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"204": "Bob",
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"631": "Jake",
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"073": "Tracy",
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}
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}
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func getUser(id string) (string, bool) {
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users := getUsers()
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user, exists := users[id]
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return user, exists
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}
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func main() {
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if len(os.Args) != 2 {
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fmt.Println("User ID not passed")
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os.Exit(1)
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}
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userID := os.Args[1]
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name, exists := getUser(userID)
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if !exists {
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fmt.Printf("Passed user ID (%v) not found.\nUsers: \n", userID)
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for key, value := range getUsers() {
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fmt.Println(" ID:", key, "Name:", value)
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}
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os.Exit(1)
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}
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fmt.Println("Name:", name)
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}
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