petervandenabeele

Starting with this email on @lrug mailing list:

http://lists.lrug.org/pipermail/chat-lrug.org/2013-October/009583.html

Eventually, 11 different implementations where proposed (code below). I adapted them to a Rspec spec and ran correctness and (naive) performance tests on them.

➜  spec git:(master) ✗ ls -lrt *.rb

knaveofdiamonds

require 'rspec/autorun'

def letters(a, b)
  indexes = b.each_char.map do |letter|
    a.each_char.each_with_index.select {|l, _| l == letter }.map {|_, i| i }
  end

  start = indexes.shift

  if indexes.empty?

avdi

require "thread"

class BoundedQueue
  def initialize(max_size = :infinite)
    @lock  = Mutex.new
    @items = []
    @item_available = ConditionVariable.new
    @max_size = max_size
    @space_available = ConditionVariable.new
  end

Integralist

The BBC has a server-side image service which provides developers with multiple sized versions of any image they request. It works in a similar fashion to http://placehold.it/ but it also handles the image ratios returned (where as placehold.it doesn't).

The original BBC News process (and my re-working of the script) follows roughly these steps...

• Create new instance of ImageEnhancer
• Change any divs within the page (which have a class of delayed-image-load) into a transparent GIF using a Base64 encoded string.
  • We set the width & height HTML attributes of the image to the required size
  • We know what size the image needs to be because each div has custom data-attr set server-side to the size of the image
  • We then set a class of image-replace onto each newly created transparent image
• We use a 250ms setTimeout to unblock the UI thread and which calls a function resizeImages which enhances the image-replace images so their source is now set to a URL whe

henrik-muehe

...

# Fake a fuse install
RUN apt-get install libfuse2
RUN cd /tmp ; apt-get download fuse
RUN cd /tmp ; dpkg-deb -x fuse_* .
RUN cd /tmp ; dpkg-deb -e fuse_*
RUN cd /tmp ; rm fuse_*.deb
RUN cd /tmp ; echo -en '#!/bin/bash\nexit 0\n' > DEBIAN/postinst
RUN cd /tmp ; dpkg-deb -b . /fuse.deb

alexyoung

#!/usr/bin/env sh
ioreg -l | grep -i capacity | tr '\n' ' | ' | awk '{printf("%.2f%%\n", $10/$5 * 100)}'

marksim

My script for pair sessions on my box.

What it does

• downloads the appropriate ssh keys from github
• copies the appropriate 'ssh pair@your-external-ip' command to your clipboard (see Note #1)
• sets up the tmux session
• cleans up the session, and the keys after it's done

How to use

ernie

class DotContext < String

  def initialize(val = '.')
    val = '.' # Ensure we're always a dot
    super
    freeze
  end

  def to_s
    self

mattetti

{
  "ActionDispatch::Static": {
    "call": 1
  },
  "ActionDispatch::FileHandler": {
    "match?": 1,
    "ext": 1
  },
  "ActiveSupport::Cache::Strategy::LocalCache::Middleware": {
    "call": 1

LindseyB

Node.js Resources

What is node.js?

Node.js is just JavaScript running on the server side. That's it. That's all there is to it.

Express

• Express Docs, if you want to get started and already know JavaScript this is the place to be