try to fill slice with struct and method in golang - go

Question

I want to create a struct movie with the property title and genre data type string, then duration and year data type integer
then create a function with the name addDataFilm to add the data object from the struct to the dataFilm slice, then display the data:
this is my code :
type movie struct {
title, genre string
duration, year int
}
func (m movie) addDataFilm(title string, genre string, duration int, year int, dataFilm *[]string) {
var d = strconv.Itoa(m.duration)
var y = strconv.Itoa(m.year)
*dataFilm = append(*dataFilm, m.title, m.genre, d, y)
}
func main(){
var dataFim = []string{}
var dd = movie{}
dd.addDataFilm("LOTR", "action", 120, 1999, &dataFim)
dd.addDataFilm("Avanger", "action", 120, 2004, &dataFim)
dd.addDataFilm("Spiderman", "action", 120, 2004, &dataFim)
dd.addDataFilm("Juon", "horror", 120, 2004, &dataFim)
fmt.Println(dataFim)
}
all i got is :
any help will be appreciated. thank you in advance

Answer 1

Create a slice of movies. Append each movie to the slice. To print, range over the slice and print each movie.
var movies []*movie
movies = append(movies, &movie{"LOTR", "action", 120, 1999})
movies = append(movies, &movie{"Avanger", "action", 120, 2004})
movies = append(movies, &movie{"Spiderman", "action", 120, 2004})
movies = append(movies, &movie{"Juon", "horror", 120, 2004})
for i, m := range movies {
fmt.Printf("%d. Title: %s\n Genre: %s\n Duration: %d\n Year: %d\n\n", i+1, m.title, m.genre, m.duration, m.year)
}
Run the program on the playground.
The logic can be wrapped up in a type:
// dataFilms stores data for multiple films.
type dataFilms []*movie
func (df *dataFilms) add(title string, genre string, duration int, year int) {
*df = append(*df, &movie{title, genre, duration, year})
}
func (df dataFilms) print() {
for i, m := range df {
fmt.Printf("%d. Title: %s\n Genre: %s\n Duration: %d\n Year: %d\n\n", i+1, m.title, m.genre, m.duration, m.year)
}
}
func main() {
var df dataFilms
df.add("LOTR", "action", 120, 1999)
df.add("Avanger", "action", 120, 2004)
df.add("Spiderman", "action", 120, 2004)
df.add("Juon", "horror", 120, 2004)
df.print()
}
Run it on the playground.

Answer 2

create struct new array of Movies
create global variable Movies to save data
call variable on func main
type Movie struct {
Title string
Genre string
Duration int
Year int
}
type Movies []Movie
var dest Movies
func addDataFilm(title string, genre string, duration int, year int) Movies {
dest = append(dest, Movie{
Title: title,
Genre: genre,
Duration: duration,
Year: year,
})
return dest
}
func TestNumberToAlphabet(t *testing.T) {
addDataFilm("LOTR", "action", 120, 1999)
addDataFilm("Avanger", "action", 120, 2004)
addDataFilm("Spiderman", "action", 120, 2004)
addDataFilm("Juon", "horror", 120, 2004)
fmt.Println(dest)
}