justinko

def find_in_batches(model)
  current_batch, count = 0, model.count

  while count > 0 do
    model.all.skip(current_batch * 1000).limit(1000).each do |doc|
      yield doc  
    end
    count -= 1000
    current_batch += 1
  end

audreyt

From SocialCalc to EtherCalc

Previously, in The Architecture of Open Source Applications, I described SocialCalc, an in-browser spreadsheet system that replaced the server-centric WikiCalc architecture. SocialCalc performs all of its computations in the browser; it uses the server only for loading and saving spreadsheets.

For the Socialtext team, performance was the primary goal behind SocialCalc's design in 2006. The key observation was this: Client-side computation in JavaScript, while an order of magnitude slower than server-side computation in Perl, was still much faster than the network latency incurred during AJAX roundtrips:

---

******

ekinertac

server{
    listen 80;
    server_name example.com;

    access_log /home/path_to_site/access.log;
    error_log /home/path_to_site/error.log;

    location / {
        proxy_pass http://0.0.0.0:8002;
        proxy_set_header Host $host;

ozten

macro $if {
    rule {
        ($x...)
    } => {
        if (relCar($x...))
    }
}

macro $while {
    rule {

brenopolanski

via: http://www.webupd8.org/2011/05/install-firefox-nightly-from-ubuntu-ppa.html

Add the Mozilla Daily PPA (available for Ubuntu 11.04, 10.10 and 10.04) and install Firefox Nightly using the commands below:

$ [sudo] add-apt-repository ppa:ubuntu-mozilla-daily/ppa
$ [sudo] apt-get update
$ [sudo] apt-get install firefox-trunk

Since this is a daily builds PPA, it's nowhere near stable so use it at your own risk!

Noitidart

Cu.import('resource://gre/modules/AddonManager.jsm');
AddonManager.getAddonByID('Profilist@jetpack', function(addon) {
  console.info('addon:', addon);
  console.info('addon.applyBackgroundUpdates:', addon.applyBackgroundUpdates);
  addon.applyBackgroundUpdates = 0; //off
  //addon.applyBackgroundUpdates = 1; //default
  //addon.applyBackgroundUpdates = 2; //on
});

yunga

_________ _____ _______________       _____
\_   ___ \\    \\___________   \____ / ____\     ~/.bash/cliref.md
/    \  \/|    | |   ||       _/ __ \  __\    copy/paste from whatisdb
\     \___|__  |_|_  ||    |   \  __/|_ |   http://pastebin.com/yGmGiDQX
 \________  /_____ \_||____|_  /____  /_|     yunga.palatino@gmail.com
 20160515 \/ 1527 \/         \/     \/

---

alias CLIRef.txt='curl -s "http://pastebin.com/raw/yGmGiDQX" | less -i'

carols10cents

Ruby to Rust Cheat Sheet

The goal of this is to have an easily-scannable reference for the most common syntax idioms in Ruby and Rust so that programmers most comfortable with Ruby can quickly get through the syntax differences and feel like they could read and write basic Rust programs.

What do you think? Does this meet its goal? If not, why not?

Variables

Ruby:

yoavniran

The Ultimate Unit Testing Cheat-sheet

---

• Sinon Chai
• Chai
• Sinon

simonw

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb