map_compact_chain

🎲 Chaining map and compact to Transform and Clean

When transforming arrays, chaining map and compact allows you to apply a transformation and immediately remove any nil results. This avoids creating intermediate arrays with unwanted nil elements.

data = ["1", "two", "3", "four"]
numbers = data
  .map { |s| Integer(s) rescue nil }
  .compact
# => [1, 3]