Removing all empty elements from a hash / YAML?

Question

How would I go about removing all empty elements (empty list items) from a nested Hash or YAML file?

Answer 1

If you're using Ruby 2.4+, you can call compact and compact!

h = { a: 1, b: false, c: nil }
h.compact! #=> { a: 1, b: false }

https://ruby-doc.org/core-2.4.0/Hash.html#method-i-compact-21