hyuki0000

" eregexプラグイン用に、 1,$s/ → 1,$S/ に変換 g/ → G/ に変換
" Based on: https://twitter.com/koturn/status/843830301780406272
" https://gist.github.com/hyuki0000/45189cb5e188ef42c8ca0925cd3acf95
cnoremap <expr>/  ReplaceSlash()
function ReplaceSlash()
  if getcmdtype() ==# ':'
    if getcmdline() ==# '1,$s'
      call feedkeys("\<C-u>1,$S/", 'n')
      return
    elseif getcmdline() ==# 'g'

hyuki0000

MacでJavaScript

参照

• http://qiita.com/zakuroishikuro/items/1b02378bf9e940602d87
• http://qiita.com/zakuroishikuro/items/afab0e33ad2030ba2f92

hyuki0000

# 奥村晴彦他『Javaによるアルゴリズム事典』p.290をRubyで

def sqrt(n)
  r = n
  t = 0
  while t != r do
    t = r
    r = (n / r + r) / 2
  end
  r

hyuki0000

def sqrtn(s)
  a = 0
  p = 0
  while not (0 <= (s / 10**p) and (s / 10**p) < 100) do
    p += 2
  end
  while p >= 0
    b = 9
    while (s / 10**p) < b * (20 * a + b) do
      b -= 1

hyuki0000

open "file.txt" do |f|
  while !f.eof? do
    l = f.readline
    break unless l
    puts "#{l.length}"
  end
end

hyuki0000

# based on shattered.io
open("1.dat", "w") do |f|
  f.print "\x25\x50\x44\x46\x2d\x31\x2e\x33\x0a\x25\xe2\xe3\xcf\xd3\x0a\x0a\x0a\x31\x20\x30\x20\x6f\x62\x6a\x0a\x3c\x3c\x2f\x57\x69\x64\x74\x68\x20\x32\x20\x30\x20\x52\x2f\x48\x65\x69\x67\x68\x74\x20\x33\x20\x30\x20\x52\x2f\x54\x79\x70\x65\x20\x34\x20\x30\x20\x52\x2f\x53\x75\x62\x74\x79\x70\x65\x20\x35\x20\x30\x20\x52\x2f\x46\x69\x6c\x74\x65\x72\x20\x36\x20\x30\x20\x52\x2f\x43\x6f\x6c\x6f\x72\x53\x70\x61\x63\x65\x20\x37\x20\x30\x20\x52\x2f\x4c\x65\x6e\x67\x74\x68\x20\x38\x20\x30\x20\x52\x2f\x42\x69\x74\x73\x50\x65\x72\x43\x6f\x6d\x70\x6f\x6e\x65\x6e\x74\x20\x38\x3e\x3e\x0a\x73\x74\x72\x65\x61\x6d\x0a\xff\xd8\xff\xfe\x00\x24\x53\x48\x41\x2d\x31\x20\x69\x73\x20\x64\x65\x61\x64\x21\x21\x21\x21\x21\x85\x2f\xec\x09\x23\x39\x75\x9c\x39\xb1\xa1\xc6\x3c\x4c\x97\xe1\xff\xfe\x01\x73\x46\xdc\x91\x66\xb6\x7e\x11\x8f\x02\x9a\xb6\x21\xb2\x56\x0f\xf9\xca\x67\xcc\xa8\xc7\xf8\x5b\xa8\x4c\x79\x03\x0c\x2b\x3d\xe2\x18\xf8\x6d\xb3\xa9\x09\x01\xd5\xdf\x45\xc1\x4f\x26\xfe\xdf\xb3\xd

hyuki0000

\documentclass[dvipdfmx]{jsbook}
\usepackage{lmodern}
\usepackage{pxrubrica} % http://qiita.com/zr_tex8r/items/42466cbcbeb670a3a2dc
% \usepackage{ccfonts} % ccfonts を入れると、sin, cosだけじゃなくすべての英文がConcreteになってしまうので注意
% \usepackage[euler-digits]{eulervm}
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\usepackage[utf8]{inputenc}
\usepackage{amsmath,amssymb}
\pagestyle{empty}

hyuki0000

\documentclass[dvipdfmx]{jsbook}
\usepackage{lmodern}
\usepackage{ccfonts} % ccfonts を入れると、sin, cosだけじゃなくすべての英文がConcreteになってしまうので注意
\usepackage[euler-digits]{eulervm}
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\usepackage[utf8]{inputenc}
\usepackage{amsmath,amssymb}
\pagestyle{empty}
\begin{document}

hyuki0000

# Making A Babylonian-like Reciprocal Table (1..100)
# 1..100 の逆数表をバビロニア風に作る
# ただし、無限小数になるものは ... を付加する
# https://cakes.mu/posts/15267

def inv60(n)
  a = []
  m = 1
  loop do
    x = (60 * m) / n

hyuki0000

def f(n,m)
  if n == 0
    1
  else
    m * f(n-1,m)
  end
end

puts "f(2,2) = #{f(2,2)}"
puts "f(10,2) = #{f(10,2)}"