How to merge YAML arrays?

Question

I would like to merge arrays in YAML, and load them via ruby -

some_stuff: &some_stuff
 - a
 - b
 - c

combined_stuff:
  <<: *some_stuff
  - d
  -         


        

Answer 1

You can merge mappings then convert their keys into a list, under these conditions:

• if you are using jinja2 templating and
• if item order is not important

some_stuff: &some_stuff
 a:
 b:
 c:

combined_stuff:
  <<: *some_stuff
  d:
  e:
  f:

{{ combined_stuff | list }}