What is the List.hd method in Ocaml?

Overview

In this shot, we'll learn how to get the head of the list (first item in the list) without iterating through the list. We'll use the List.hd method in Ocaml to achieve this.

Syntax

Parameters

The List.hd method receives the list of which the first item we want to retrieve as a parameter.

Return value

The List.hd method returns the first item in the list.

Example

Let's look at the code below:

Explanation

In the code snippet above:

• Line 1: We create a list x with list items [3;2;5].

• Line 2: We use the List.hd method to get the head of the list x and then use the print_int() method to print the head item to the console.