tompng

return if ENV['WITHOUT_IRBRC']

{ IRB: 'irb', Reline: 'reline', ReplTypeCompletor: 'repl_type_completor' }.each do |const_name, lib|
  require lib
  const = Object.const_get(const_name)
  version = const::VERSION
  dir = File.expand_path File.join(File.dirname(const.const_source_location(:VERSION).first), '../../')
  if File.exist?(File.join(dir, '.git'))
    Dir.chdir dir do
      branch = `git branch`[/^\* .+/][2..]

tompng

files_rbreadline = Dir.glob('rb-readline/lib/**/*.rb')
files_reline = Dir.glob('reline/lib/**/*.rb')

K = 123456789
P = (1 << 81) | 17

def hashes(text, n)
  output = {}
  hash = 0
  hash2 = 0

tompng

• 極端に長い行の貼り付け・編集などのパフォーマンスが悪い

  • 長い行数を貼り付けるよりも利用頻度高そう。jsonを貼り付けるとか。どこがボトルネックか測る

• Unicode

  • split_by_widthはheightを返す必要もないし配列の偶数番めにnilを含める必要もない
  • get_prev_mbchar とか、unicode.rbでやるべきことか怪しいような
  • get_nth_prev_mbchar とかにしないとvi_argが大きい場合のパフォーマンスが悪い
  • get_mbchar_widthの高速化をどこまでやるか(あと2段階くらい変身を残してる)効果がどれくらいあるか測る

• GeneralIO

tompng

require 'open3'
# Usage: cat code.rb | ruby ansi_pbcopy.rb --size 64 --font monospace

FONT = ARGV[ARGV.index('--font') + 1] rescue 'courier'
SIZE = ARGV[ARGV.index('--size') + 1] rescue 16
COLORS = ARGV[ARGV.index('--color') + 1].split rescue %w[#000000 #A00000 #008000 #606000 #0000C0 #800080 #008080 #808080]


initial = { bg: 9, fg: 9, bold: false, italic: false, underline: false }
style = initial.dup

tompng

      %w@state=32;(st@=>s;at_exit{eval(
    c=s*'')};s+=%w@ate..).each{|s|a=64.ch
  r;t=((-11..11).map{|iy|((-22..22).map{|ix
|x,y=((ix+iy*2i)*(1i**(s/16r))).rect;[x.abs+(
y-5).abs,y+10].max<23.4??X:32.chr}*'').rstrip

tompng

require 'matrix'
module RegEqSolver
  class RHS
    alias ~ binding
    public :~
  end
  [Integer, Float, Rational, Complex].each do |klass|
    refine klass do
      def ~
        $rhs = self

tompng

# https://github.com/ruby/reline/pull/632

sizes=[]
CHUNK_LAST.zip(CHUNK_WIDTH).each{sizes << _2 while sizes.size <= [_1, 0x10ffff].min };
BITCHUNKS = sizes.each_slice(2048).map do |seg|
  next seg.first if seg.uniq.size == 1
  seg.each_slice(64).map do |sub|
    next sub.first if sub.uniq.size == 1
    s = sub.map { _1 == -1 ? 3 : _1 }.reverse.join
    num = s.to_i(4)

tompng

def series(l, r)
  if r - l <= 1
    p = (2 * r - 1) * (6 * r - 5) * (6 * r - 1)
    q = r * r * r * 10939058860032000
    a = (r % 2 == 0 ? 1 : -1) * (13591409 + 545140134 * r)

    [p, q, a * p]
  else
    m = (l + r) / 2
    p0, q0, t0 = series(l, m)

tompng

MAYBE_TIOCGETC = [
  0x40067412, # M2 Mac
  2, # docker rubyfarm? something is wrong

  # unknown, found in github search
  ('T'.ord << 8) | 2,
  ('t'.ord << 8) | 18
]
cchars = "\0" * 256
STDIN.ioctl(TIOCGETC, cchars)

tompng

def fibo_c(n)
  return 1 if n == 0
  a=fibo_c(n/2)*b=1i**n[0]
  b.*a.abs2+(a.*2+1i).real*a.imag.i
end

10.times.map{fibo_c(_1).real}
# => [1, 1, 2, 3, 5, 8, 13, 21, 34, 55]