k-tsj

END {
  8.times.parallel(n: 2).each { p _1 }
}

class Enumerator
  class Parallel
    def initialize(enum, n:)
      @enum = enum
      @n = n
    end

k-tsj

diff --git a/parse.y b/parse.y
index 93bc2ef9ff..81db9a660d 100644
--- a/parse.y
+++ b/parse.y
@@ -1539,33 +1539,23 @@ stmt            : keyword_alias fitem {SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);} fitem
                | expr
                ;

-rassign        : arg_value tASSOC lhs
+rassign        : arg_value tASSOC

k-tsj

source = %q{
  case 0
  in a: 0
  end
}

RubyVM::InstructionSequence.compile_option = RubyVM::InstructionSequence.compile_option.transform_values do |v|
  (v == true or v == false) ? false : v
end

k-tsj

module Extractor
  MATCH_FAILED = []
  def MATCH_FAILED.length
    -1
  end

  def ===(obj)
    unapply = method(:unapply)
    obj.singleton_class.define_method(:deconstruct) do
      singleton_class.remove_method(:deconstruct)

k-tsj

// https://gist.github.com/k-tsj/af03233fc023cb9e3280b0bce8c404b5
//
// License: Mozilla Public License 2.0
// Author: k-tsj

(() => {
  window.addEventListener("keydown", (aEvent) => {
    const keywords = BrowserSearch.searchBar.value.match(/"(?:\\"|\\\\|[^"])*"|\S+/g);
    function exec_find() {
      gFindBar._findField.value = keywords[aEvent.keyCode - KeyEvent.DOM_VK_1].replace(/^"|"$/g, "");

k-tsj

#0  rb_f_raise (argc=1, argv=0x7ffff7ee20f0) at eval.c:667
#1  0x0000555555742f61 in call_cfunc_m1 (func=0x5555555e91ac <rb_f_raise>, recv=93824997925600, argc=1, argv=0x7ffff7ee20f0) at vm_insnhelper.c:1706
#2  0x0000555555743a4a in vm_call_cfunc_with_frame (th=0x555555a5e620, reg_cfp=0x7ffff7fe1e90, calling=0x7fffffff9b40, ci=0x555555b75350, cc=0x555555b75370) at vm_insnhelper.c:1889
#3  0x0000555555743bd6 in vm_call_cfunc (th=0x555555a5e620, reg_cfp=0x7ffff7fe1e90, calling=0x7fffffff9b40, ci=0x555555b75350, cc=0x555555b75370) at vm_insnhelper.c:1905
#4  0x0000555555744e05 in vm_call_method_each_type (th=0x555555a5e620, cfp=0x7ffff7fe1e90, calling=0x7fffffff9b40, ci=0x555555b75350, cc=0x555555b75370) at vm_insnhelper.c:2203
#5  0x00005555557454fb in vm_call_method (th=0x555555a5e620, cfp=0x7ffff7fe1e90, calling=0x7fffffff9b40, ci=0x555555b75350, cc=0x555555b75370) at vm_insnhelper.c:2334
#6  0x0000555555745649 in vm_call_general (th=0x555555a5e620, reg_cfp=0x7ffff7fe1e90, calling=0x7fffffff9b40, ci=0x555555

k-tsj

$ ruby t.rb
["t.rb:1:in `m1'", "t.rb:7:in `<main>'"]
["t.rb:2:in `m2'", "t.rb:8:in `<main>'"]
["t.rb:9:in `<main>'"]
["t.rb:4:in `block in <main>'", "t.rb:10:in `<main>'"]

k-tsj

Syntax

case value
=> pat [if|unless cond]
  ...
=> pat [if|unless cond]
  ...
else
  ...
end

k-tsj

$ bin/ruby -v
ruby 2.4.0dev (2016-09-12 master 56141) [x86_64-linux]

$ bin/ri
ri 5.0.0.beta2

$ bin/ri String
= String < Object

------------------------------------------------------------------------------

k-tsj

module DidYouMean
  class MethodNameChecker
    prepend Module.new {
      PY2RB = {
        String => {
          lower: %i(downcase)
        },
        Object => {
          len: %i(obj.length)
        }