How to use the size filter in Liquid?

Question

How does the "size" filter work in Liquid if the size of an array is zero. I would like to check if an array's size == 0 or if it is empty. Does the size filter output anything if the array is empty? If not, is there a better way to check if an array is empty? Thanks.
{% if {{lastMinuteOpeningsApp | size}} == 0 %}
    <!-- Some HTML code here to run if the array is empty -->
{% endif %}
I really wish there were more/better examples on the BC documentation for Liquid.

Answer 1

Hi Dean,
Firstly - You do not need to do the braces inside the if:
{% if {{lastMinuteOpeningsApp | size}} == 0 %}
{% if lastMinuteOpeningsApp | size == 0 -%}
Secondly, If you are accessing web app items, you do not access the webapp as you have.
<pre>{{lastMinuteOpeningsApp | json }}</pre> Will get you the output of the web app liquid object. You will see the items actually inside "items"
So your web app items would but items are not returned if there are no web app items - Have a look. With that you can just say if lastMinuteOpeningsApp.items. Size will only return the maximum number of items you have per pagination limit.