how to insert value in first slice index in golang-CodePudding

i have an struct & array slice

type Book struct {
    bookName string
    category string
    creator  string
}

var books = []Book{
    {bookName: "study go", category: "programming", creator: "steve"},
    {bookName: "study html", category: "programming", creator: "jobs"},
}

func main() {

//how to add data to index[0] or front of books

}

CodePudding user response：

How about this?

package main

import "fmt"

func test() {
    books = append([]Book{{
        bookName: "study c  ",
        category: "programing",
        creator:  "tmp",
    }}, books...)
    fmt.Println(books)
}

CodePudding user response：

Your question is not clarified. I have tried to give you an answer. I combined the first index in the books variable with other data in the new variable.

package main

import "fmt"

type Book struct {
    bookName string
    category string
    creator  string
}

func main() {
    var books = []Book{
        {bookName: "study go", category: "programming", creator: "steve"},
        {bookName: "study html", category: "programming", creator: "jobs"},
    }
    var new = []Book{
        {bookName: "study css", category: "Styling", creator: "john"},
    }
    new = append(books[0:2], new[0])
    fmt.Println(new)
}

Result

[{study go programming steve} {study html programming jobs} {study css Styling john}]