step.html

<h3>Operations on lists</h3>

<p>You can use some predefined functions on lists such as reversing the list</p>
<p><code>List.rev [1; 2; 3]</code></p>

<br />
<p>Get the first element of the list:</p>
<p><code>List.hd [1; 2; 3]</code></p>

<br />
<h3>Operations on arrays</h3>

<p>You can also use some predefined functions on arrays such as
concatenate two arrays</p>
<p><code>Array.append [| 1; 2 |] [| 3; 4; 5 |]</code></p>

<br />
<p>To get the element number <code>i</code> of an array, you have two
ways to do this (don't forget, the first element has number <code>0</code>):</p>
<p><code>Array.get [| 42; 51; 32 |] 2 </code></p>

<p>or</p>

<p><code>[| 42; 51; 32 |].(2) </code></p>