尝试在 golang 中用结构和方法填充切片

Question

我想用属性 title 和 genre 数据类型 string 创建结构 movie，然后 duration 和 year 数据类型 integer 然后创建一个名为 addDataFilm 的函数，将结构中的数据对象添加到 dataFilm 切片，然后显示数据：

这是我的代码：

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)
}

我得到的是：

如有任何帮助，我们将不胜感激。提前谢谢你

Answer 1

在切片上创建 slice of movies. Append each movie to the slice. To print, range 并打印每部电影。

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.

逻辑可以包含在一个类型中：

// 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

创建新的电影结构数组
创建全局变量 Movies 来保存数据
在 func main 上调用变量

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)

}

尝试在 golang 中用结构和方法填充切片

try to fill slice with struct and method in golang

go