Concatenates (joins together) multiple arrays. The resulting array contains all the items from the input arrays.
Input
{% assign fruits = "apples, oranges, peaches" | split: ", " %}
{% assign vegetables = "carrots, turnips, potatoes" | split: ", " %}
{% assign everything = fruits | concat: vegetables %}
{% for item in everything %}
- {{ item }}
{% endfor %}
Output
- apples
- oranges
- peaches
- carrots
- turnips
- potatoes
You can string together concat
filters to join more than two arrays:
Input
{% assign furniture = "chairs, tables, shelves" | split: ", " %}
{% assign everything = fruits | concat: vegetables | concat: furniture %}
{% for item in everything %}
- {{ item }}
{% endfor %}
Output
- apples
- oranges
- peaches
- carrots
- turnips
- potatoes
- chairs
- tables
- shelves
Output
- business
- celebrities
-
- lifestyle
- sports
-
- technology
By using compact
when we create our site_categories
array, we
can remove all the nil
values in the array.
Input
{% assign site_categories = site.pages | map: "category" | compact %}
{% for category in site_categories %}
- {{ category }}
{% endfor %}
Output
- business
- celebrities
- lifestyle
- sports
- technology