yasaichi

class Object
  def behaves_like?(object)
    expected_methods =
      if object.respond_to?(:instance_methods)
        object.instance_methods
      else
        object.methods
      end

    (expected_methods - methods).empty?

yasaichi

require './basic_auth'

App = lambda do |env|
  [200, { "Content-Type" => "text/html" }, ["Hello, Rack world!"]]
end

use BasicAuth, user_name: 'test:user', password: 'pass'
run App

yasaichi

require 'base64'

class BasicAuth
  def initialize(app, user_name:, password:)
    @app = app
    @user_name = user_name
    @password = password
  end

  def call(env)

yasaichi

class Hash
  def transform_keys
    return enum_for(:transform_keys) unless block_given?
    result = self.class.new
    each_key do |key|
      result[yield(key)] = self[key]
    end
    result
  end

yasaichi

require 'active_support/core_ext'

class Hash
  unless method_defined?(:camelize_keys)
    def camelize_keys(first_letter = :upper)
      transform_keys { |key| key.camelize(first_letter) rescue key }
    end
  end

  unless method_defined?(:camelize_keys!)