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Go – List package in go golang

In this tutorial, We are going to learn about list package in go golang. list package resides under go container

Internally, list package implements doubly linked list.

How to import list package in go golang:

 import "container/list"

Example:

package main

import (
  "container/list"
  "fmt"
)

func main() {

  // Create a new list and insert elements in it.
  l := list.New()
        
  l.PushBack(1)   // 1

  l.PushBack(2) // 1 -> 2

  l.PushFront(3)  // 3 -> 1 -> 2

  l.PushBack(4) // 3 -> 1 -> 2 -> 4

  // Iterate through list and print its elements.
  for ele := l.Front(); ele != nil; ele = ele.Next() {
            
    fmt.Println(ele.Value)

  }

}

Output:

 3
1
2
4

There are two structures used in list package.

  • Element structure
  • List structure

Element” structure in list package

Here, Element is an element of a linked list.

 type Element struct {

// next and prev are pointers of doubly-linked list.
next, prev *Element

// The list to which this element belongs.
list *List

// The value stored with this element.
Value interface{}
}

“List” structure in list package

List represents a doubly linked list. The zero value for List is an empty list and it is ready to use.

 type List struct {
// contains filtered or unexported fields
}

list package has following given below set of functions to perform operation on linked list.

Functions under “Element” structure:

Functions under “List” structure:

To learn more about golang, Please refer given below link.

https://www.techieindoor.com/go-lang-tutorial/
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/
Posted in golang, list package

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