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Junya Ogino ogijun

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@ogijun
ogijun / d2j.rb
Last active November 26, 2024 09:16
require 'json'
def d2j(data)
case data
when Hash
if data.keys.length == 1 && %w[S N M L NULL BOOL].include?(data.keys.first)
key, value = data.first
case key
when 'S', 'N'
value.is_a?(String) && key == 'N' ? value.to_i : value
@ogijun
ogijun / bsearch.rb
Created August 28, 2012 01:59
class Array
def bsearch(e, l = 0, u = length - 1)
if l <= u
m = (l + u)/2
e < self[m] ? u = m - 1 : l = m + 1
e == self[m] ? m : bsearch(e, l, u)
end
end
end
@ogijun
ogijun / nokogiri_xslt_example.rb
Created May 3, 2012 14:27
require 'nokogiri'
xml = <<EOS
<html>
<body>
<h1><a href="#">This is title</a></h1>
<p>
Hello <i>world</i>!
This is <em>another</em> line.
<p><h3>And a paragraph <em>with</em> a heading.</h3></p>
@ogijun
ogijun / pretty_print.xsl
Created May 3, 2012 14:01
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" encoding="ISO-8859-1"/>
<xsl:param name="indent-increment" select="' '"/>
<xsl:template name="newline">
<xsl:text disable-output-escaping="yes">
</xsl:text>
</xsl:template>
<xsl:template match="comment() | processing-instruction()">
@ogijun
ogijun / japanese_holidays.rb
Created April 19, 2012 03:06
# encoding: UTF-8
class HolidayInfo
def initialize date
@date = date
@is_national = false
@name = ""
@is_substitute = false
end
attr_accessor :date, :is_national, :name, :is_substitute
@ogijun
ogijun / gist:1869060
Created February 20, 2012 12:48
Guessing the encoding of given string by trying only Japanese major encodings.
def ugly_guess_jp str
%w[UTF-8 EUC-JP Shift_JIS eucJP-ms Windows-31J].find do |encoding|
begin
tested = str.force_encoding(encoding)
tested.valid_encoding? && tested.encode('UTF-8').valid_encoding?
rescue Encoding::UndefinedConversionError => e
nil
end
end
end
@ogijun
ogijun / bootstrap_link_renderer.rb
Created November 1, 2011 12:03
@ogijun
ogijun / rama.rb
Created January 30, 2011 20:24
aj = [[0,1,2],[2,0,1],[1,2,0]]
n = 100
m = 10
while (n > 0)
hm = m/2
(1..(m-6)/4).each { |a| a3 = a**3
((a+1)..(((m2=m-a)-3)/3)).each { |b| b3 = b**3
# a+b+c+d == m; a+d == b+c (mod 6) => c == m/2-b (mod 3)
c = b+1; c += aj[c%3][(hm-b)%3]
upper_c = ((m3=m2-b)-1)/2
@ogijun
ogijun / rama.hs
Created January 30, 2011 20:24
-- Ramanujan Numbers:
-- c.f. http://www.ipl.t.u-tokyo.ac.jp/~onoue/pub/jssst01.pdf
module Main where
main = print (take 10 (ramanujan (\(a,b) -> a^3 + b^3)))
ramanujan f = [(x,y) | (x,y)<- zip s (tail s), f x == f y] where s = fsort f 1
fsort f k = (k,k) : fmerge f [(k,b) | b<-[k+1..]] (fsort f (k+1))
fmerge f (x:xs) (y:ys)
| f x <= f y = x : fmerge f xs (y:ys)
| otherwise = y : fmerge f (x:xs) ys
@ogijun
ogijun / gist:770589
Created January 8, 2011 05:52
require 'curb'
require 'net/http'
require 'open-uri'
require 'benchmark'
Net::HTTP.version_1_2
n = 100
Benchmark.bm do |x|