wteuber

r=rand;(1..9).map{|n|Math.log10(1+1.0/n)}.inject([]){|a,e|a+[(a[-1]||0)+e]}.map.with_index{|p,i|[i+1,p]}.find{r<_2}[0]

wteuber

set_trace_func -> (event, file, line, id, binding, classname) do
  if event == 'call' && meth = binding.eval('__method__')
    params = binding.method(meth).parameters.select{|e| e[0] != :block}
    values = params.map{|_, var| [var, binding.local_variable_get(var)]}
    printf "%8s %s:%-2d %15s %8s %s\n", event, file, line, id, classname, values.inspect
  else
    printf "%8s %s:%-2d %15s %8s\n", event, file, line, id, classname
  end
end

wteuber

require 'fileutils'
# TODO get list of Cops that support auto-correct
# for each cop, run the following
# only commit if change was stable
# (each run takes ~2 minutes)
prefix = ARGV[0]
files = Dir["#{prefix}/**/*.rb"].sort
orig = Hash[files.map do |file|
    FileUtils.cp(file, "#{file}.orig")
    [file, %x(ruby --dump insns #{file}).gsub(/\s+\(\s*\d+\)$/, '')]

wteuber

#! /usr/bin/env bash

if [ -f "$1" ]; then
  echo "ffmpeg -i $1 -vcodec copy -acodec copy $1.mp4 ..."
  ffmpeg -i $1 -vcodec copy -acodec copy $1.mp4
else
  echo "ERROR: Could not find $1"
fi

if [ \( $? -eq 0 \) -a \( -f $1.mp4 \) ]; then

wteuber

require "benchmark"

class A
  def name
    @name ||= begin
      rand
    end
  end
end

wteuber

Subtree merging and you

If you’re using Git, you’re probably aware of submodules. They’re useful when you want to integrate and track another Git repository into your own. But there are two other options at your disposal.

The first one is to simply merge the other repository. This works fine as long as there are no conflicting files, but chances are there already are or will be in the future, which makes this option not too useful.

This is where the subtree merge strategy comes in. It allows you to merge another repository (let’s call it “Project B”) into your own, but into its own subdirectory. It takes a bit of effort to set everything up the first time, but after that a pull from the other repository is all that is needed to update.

Here’s how you set it up. First you need to add Project B as a remote:

wteuber

require 'yaml'

def compare_yaml_hash(cf1, cf2, context = [])
  cf1.each do |key, value|
    if cf2.key?(key)
      puts "Contains key : #{key} in path #{context.join(".")}"
    end

    value2 = cf2[key]
    next unless value2

wteuber

table = [
  {a: 'asd', b: 'asd/asd/sdf/hk/lklkjlkj.lol', c: 'Lorem foo bar baz lol :-)'},
  {a: 'aassddaassdd', b: 'asd/lll.lol', c: 'Lorem foo bar baz lol2 :-)'},
  {a: 'a', b: 'test/[:id].format', c: ';-)'}]
max_length = -> (k) { [k, table.map { |e| e[k]}.max_by(&:length).length + 3]}
widths = Hash[%i(a b c).map(&max_length)]
# => {:a=>15, :b=>30, :c=>29}
puts table.map{|route| route.map{|key, val| val.ljust(widths[key])}.join}
# asd            asd/asd/sdf/hk/lklkjlkj.lol   Lorem foo bar baz lol :-)
# aassddaassdd   asd/lll.lol                   Lorem foo bar baz lol2 :-)

wteuber

class Mysql56 < Formula
  desc "Open source relational database management system"
  homepage "https://dev.mysql.com/doc/refman/5.6/en/"
  url "https://downloads.mariadb.com/archives/mysql-5.6/mysql-5.6.27.tar.gz"
  sha256 "8356bba23f3f6c0c2d4806110c41d1c4d6a4b9c50825e11c5be4bbee2b20b71d"

  bottle do
    sha256 "b2d6eea1c69123f013eb8aecf0947e6c5ee2e13478bc178ec0858754a062bb38" => :el_capitan
    sha256 "4395032f58d2222e30fd193b49227d983d3ea3944b7dd1120d2dca1f7d6db3ec" => :yosemite
    sha256 "dc0259e2c8707d6975d918b4f35e9129455afabe4577755395bbe1fe3aae8e61" => :mavericks

wteuber

# Ubuntu
alias alert='notify-send --urgency=low -i "$([ $? = 0 ] && echo terminal || echo error)" "$(history|tail -n1| sed -e '\''s/^\s*[0-9]\+\s*//;s/[;&|]\s*alert$//'\'')"'
  
# Mac
alert () { osascript -e "display alert \"$1\"" }