igaiga

## Analyze Wikipedia access data
# Data format
# https://wikitech.wikimedia.org/wiki/Analytics/Data/Pageviews
# Files
# https://dumps.wikimedia.org/other/pageviews/

filename = "pageviews-20170101-000000"
file = File.open(filename)
access_data = []
file.each_line do |text|

igaiga

# Analyze Wikipedia access data
# https://dumps.wikimedia.org/other/pageviews/
# Data format
# https://dumps.wikimedia.org/other/pagecounts-raw/
# "ja "はじまりのものだけ(=Wikipediaだけ)をカウントしている。
# ja.X の説明は上記のData format参照。
# 取得したサンプルデータ
# "en Tokyo_Station 3 0\n"
# "ja 名古屋駅 3 0\n"
# "ja 大阪駅 4 0\n"

igaiga

# encoding: utf-8
# Analyze Wikipedia access data older version
# https://dumps.wikimedia.org/other/pagecounts-raw/
require "cgi"
filename = "20120301-000000-ja.txt"
file = File.open(filename, "r:UTF-8")
list = []
while text = file.gets
  begin
    next unless text =~ /^ja/

igaiga

## Analyze Wikipedia access data
# Data format
# https://wikitech.wikimedia.org/wiki/Analytics/Data/Pageviews
# Files
# https://dumps.wikimedia.org/other/pageviews/
# "ja "はじまりのものだけ(=Wikipediaだけ)をカウントしている。
# ja.X の説明は上記のData format参照。
## 結果(pageviews-20170101-000000の駅名上位10件)
# 八丁堀駅 12
# 品川駅 9

igaiga

# peco + git branch -r + git co
function peco-g-branch-checkout () {
    local selected=$(git branch -r | peco --query "$LBUFFER" | awk -F/ '{print $NF}')
    if [ -n "$selected" ]; then
        git checkout -b ${selected} origin/${selected}
    fi
}

igaiga

# http://docs.ruby-lang.org/ja/2.3.0/class/Benchmark.html
require "benchmark"
Benchmark.bm do |x|
  x.report("100000.times:") { 100000.times{a = "1"} }
end

igaiga

# https://speakerdeck.com/a_matsuda/3x-rails
# メソッド呼び出し回数の記録
class MethodCounter
  def initialize(app)
    @app = app
  end
  def call(env)
    calls = []
    trace = TracePoint.new(:call, :c_call) do |tp|
      calls << [tp.defined_class, tp.method_id, tp.lineno]

igaiga

# This is not a very beautiful code, but it's just an example...
# And it kinda works...
require 'benchmark/ips'
Rails.application.config.after_initialize do
  Rails.application.extend Module.new {
    def call(e)
      super
      p before: GC.stat
      # RUBY_GC_HEAP_INIT_ SLOTS=1000000 + GC.disable
      Benchmark.ips do |x|

igaiga

require "ripper"
require "pp"

code = <<STR
10.times do |n|
  puts n
end
puts code
STR

igaiga

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