Overview

if

if / else should be well known from any imaginable programming language.
SML allows you to write simple expressions in the if or unless (and optionally, elsif and else) clause:

Example

{% if is_page_fan %}
    Thanks for being a fan!
{% endif %}

{% if current_locale == 'en_US' %}
    Hello
{% elsif current_locale == 'es_MX' %}
    Hola
{% endif %}

{% if current_locale == 'en_US' or current_locale == 'en_UK'%}
    Greetings
{% endif %}

{% if current_locale != 'en_US' %}
    Your locale is not en_US
{% endif %}

{% capture greeting %}Greetings world{% endcapture %}

{% if greeting contains 'world' %}Hello world{% endif %}