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Thread.current[:fiber_local] = :ok

def enumerator
  Enumerator.new do |yielder|
    yielder.yield Thread.current[:fiber_local]
  end
end

p enumerator.next  # => nil
# which is explained by, can be reduced to:

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# frozen_string_literal: true

require "bundler/inline"

gemfile(true) do
  source "https://rubygems.org"

  git_source(:github) { |repo| "https://github.com/#{repo}.git" }

  gem "rails", github: "rails/rails", branch: 'master'

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# Defining private methods is less clean using module_function

module ExtendSelf
  extend self

  def bar
    foo
  end

  private

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class Lol
  attr_accessor :foo？
end
lol = Lol.new
lol.foo？ = 42
p lol.foo？

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Keybase proof

I hereby claim:

• I am etiennebarrie on github.
• I am etienne (https://keybase.io/etienne) on keybase.
• I have a public key whose fingerprint is A458 A5E6 9102 E188 AD0E CD57 8401 EA22 480C 61C1

To claim this, I am signing this object:

etiennebarrie

# Using Array#assoc instead of a Hash when comparing using only ==

require 'test/unit/assertions'
include Test::Unit::Assertions

class Foo
  def initialize(i)
    @i = i
  end

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require 'test/unit'

class A
  def a
  end
  def method_missing(*)
  end
end

class B < A

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class Foo
  def foo(*args)
    puts(*args)
  end

  def bar
    foo = 42
    foo foo
  end
end

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module LocalMonkeyPatch
  def foo
    42
  end
end

array = []
array.extend LocalMonkeyPatch
p array.foo

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Wrong = Class.new(Exception)
Right = Class.new(StandardError)

begin
  raise Wrong, "Can't be rescued easily"
rescue
  puts "Not reached"
rescue Wrong
  puts "#{$!}, have to be explicitely rescued"
end