Examples of Ruby Result monad in use

one.rb

# Given methods that return Results...

get_params
  .and_then(method(:validate_params))
  .and_then(method(:save_record))
  .and_then(method(:send_email))
  .match(ok: method(:render_success),
         error: method(:render_failure))

two.rb

# Given objects/classes that have a `.call` method which return Results...

[Result.ok(initial_state),
 CheckVideoSize,
 CheckVideoFrameRate,
 CheckVideoFreezeDuration,
 CheckVideoSilenceDuration,
 SendToVideoService]
  .reduce(:and_then)

# This array can be built dynamically. :)