dry-result_matcher

An expressive, all-in-one API for operating on Kleisli Either results.

Usage

Operate an an Either object from the outside:

result = Right("some result")

Dry::ResultMatcher.match(result) do |m|
  m.success do |v|
    "Success: #{v}"
  end

  m.failure do |v|
    "Failure: #{v}"
  end
end

Or extend your own Either-returning classes to support result match blocks:

class MyOperation
  include Dry::ResultMatcher.for(:call)

  def call
    Right("some result")
  end
end

my_op = MyOperation.new
my_op.call() do |m|
  m.success do |v|
    "Success: #{v}"
  end

  m.failure do |v|
    "Failure: #{v}"
  end
end

License

Copyright © 2015-2016 Icelab. dry-result_matcher is free software, and may be redistributed under the terms specified in the license.