a-b

# coding=UTF-8
from __future__ import division
import nltk
from collections import Counter

# This is a simple tool for adding automatic hashtags into an article title
# Created by Shlomi Babluki
# Sep, 2013

a-b

gifify() {
  if [[ -n "$1" ]]; then
    if [[ $2 == '--good' ]]; then
      ffmpeg -i $1 -r 10 -vcodec png out-static-%05d.png
      time convert -verbose +dither -layers Optimize -resize 600x600\> out-static*.png  GIF:- | gifsicle --colors 128 --delay=5 --loop --optimize=3 --multifile - > $1.gif
      rm out-static*.png
    else
      ffmpeg -i $1 -s 600x400 -pix_fmt rgb24 -r 10 -f gif - | gifsicle --optimize=3 --delay=3 > $1.gif
    fi
  else

a-b

RSpec.configure do |config|
  config.filter_run_excluding :show_me_the_pages unless ENV["SHOW_ME_THE_PAGES"]
end



class Screenshots
  include Capybara::DSL
  attr_accessor :resolutions
  attr_accessor :output_path

a-b

#!/bin/sh

# Some things taken from here
# https://github.com/mathiasbynens/dotfiles/blob/master/.osx

# Set the colours you can use
black='\033[0;30m'
white='\033[0;37m'
red='\033[0;31m'
green='\033[0;32m'

a-b

Latency Comparison Numbers
--------------------------
L1 cache reference                            0.5 ns
Branch mispredict                             5   ns
L2 cache reference                            7   ns             14x L1 cache
Mutex lock/unlock                            25   ns
Main memory reference                       100   ns             20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy              3,000   ns
Send 1K bytes over 1 Gbps network        10,000   ns    0.01 ms
Read 4K randomly from SSD*              150,000   ns    0.15 ms

a-b

{
  "variables": {
    "aws_access_key": "{{env `AWS_ACCESS_KEY`}}",
    "aws_secret_key": "{{env `AWS_SECRET_KEY`}}"
  },
  "builders": [
    {
      "type": "amazon-ebs",
      "ssh_pty": true,
      "access_key": "{{user `aws_access_key`}}",

a-b

Finding a Ruby memory leak using a time analysis

When developing a program in Ruby, you may sometimes encounter a memory leak. For a while now, Ruby has a facility to gather information about what objects are laying around: ObjectSpace.

There are several approaches one can take to debug a leak. This discusses a time-based approach, where a full memory dump is generated every, say, 5 minutes, during a time that the memory leak is showing up. Afterwards, one can look at all the objects, and find out which ones are staying around, causing the

a-b

Direct links to free Springer maths books (pdf versions)

duplicates = multiple editions

A Classical Introduction to Modern Number Theory,Kenneth IrelandMichael Rosen

A Classical Introduction to Modern Number Theory,Kenneth IrelandMichael Rosen

A Course in Arithmetic,Jean-Pierre Serre

a-b

" Apparently some vim environments require colons before commands in
" .vimrc and others don't. This file has been primarily tested in 
" Ubuntu 12.04, 13.10, and 14.04 environments, where a : is required
" on each line before a command. According to one stackexchange topic
" it is best to leave the leading colons because systems that do not 
" require them can still execute them.
" Author - Trent Robbins

:set background=dark

a-b

Shakespeare Sonnet++ Postmortem (incident #465)

Date

2015-10-21

Authors

• jennifer
• martym