if conditoin in twig code example

Example 1: twig if else

// twig if else
{% if process_1 %}
   {{ process_1 }}
{% elseif process_2 %}
   Only {{ process_2 }} left!
{% else %}
   Sold-out!
{% endif %}

Example 2: twig if statement

{% if users %}
    <ul>
        {% for user in users %}
            <li>{{ user.username|e }}</li>
        {% endfor %}
    </ul>
{% endif %}