In this tutorial, we are going to learn about PushFrontList() function in list package in go golang. PushFrontList() function is used to insert a copy of another list at the front of list in go golang.
Function proto type:
func (list_1 *List) PushFrontList(list_2 *List)
PushFrontList() function:
PushFrontList() function inserts a copy of another list at the front of list.
Both the lists may be the same but must not be nil.
Example:
list_1 = 1 -> 2
list_2 = 3 -> 4
After apply PushFrontList() function:
list_1.PushFrontList(list_2)
list_1 = 3 -> 4 -> 1 -> 2
Example to use PushFrontList() function in list:
package main
import (
"container/list"
"fmt"
)
func main() {
var ele *list.Element
// Create two list and insert elements in it.
list_1 := list.New()
list_2 := list.New()
list_1.PushBack(1) // 1
list_1.PushBack(2) // 1 -> 2
list_2.PushBack(3) // 3
list_2.PushBack(4) // 3 -> 4
fmt.Println("Print list_1")
for ele = list_1.Front(); ele != nil; ele = ele.Next() {
fmt.Println(ele.Value)
}
fmt.Println("Print list_2")
for ele = list_2.Front(); ele != nil; ele = ele.Next() {
fmt.Println(ele.Value)
}
/* insert list_2 to list_1 at the front
using PushFrontList function */
list_1.PushFrontList(list_2)
fmt.Println("Print list_1 after inserting list_2 in it: ")
for ele = list_1.Front(); ele != nil; ele = ele.Next() {
fmt.Println(ele.Value)
}
}
Output:
Print list_1
1
2
Print list_2
3
4
Print list_1 after inserting list_2 in it:
3
4
1
2
To learn more about golang, Please refer given below link:
https://www.techieindoor.com/go-lang-tutorial/
References:
https://golang.org/doc/
https://golang.org/pkg/
https://golang.org/pkg/fmt/
https://golang.org/pkg/fmt/#Println
https://golang.org/pkg/container/list/