Go queue implementation with generics

go_queue_generics_example.go

package main

import (
	"fmt"
)

type User struct {
	Id   int
	Name string
}

// Define a struct for the Queue
type Queue[V any] struct {
	items []V
}

// Enqueue adds an element to the end of the queue
func (q *Queue[V]) Enqueue(item V) {
	q.items = append(q.items, item)
}

// Dequeue removes the first element from the queue
func (q *Queue[V]) Dequeue() {
	if len(q.items) == 0 {
		return
	}
	q.items = q.items[1:]
}

// GetAll returns all values currently in the queue
func (q *Queue[V]) GetAll() []V {
	return q.items
}

func main() {
	// Create a new queue
	queue := Queue[User]{}

	// Enqueue some elements
	queue.Enqueue(User{Id: 1, Name: "Jaspion"})
	queue.Enqueue(User{Id: 2, Name: "Jiraya"})
	queue.Enqueue(User{Id: 3, Name: "Jiban"})
	fmt.Println("Queue before dequeue:", queue)

	// Dequeue an element
	queue.Dequeue()
	fmt.Println("Queue after dequeue:", queue)

	// Get all elements
	allItems := queue.GetAll()
	fmt.Println("All items:", allItems)
}