thiagoa

If your running a x64 bit Ubuntu or other Linux and find USB transfers hang at the end apply this fix:

echo $((16*1024*1024)) > /proc/sys/vm/dirty_background_bytes
echo $((48*1024*1024)) > /proc/sys/vm/dirty_bytes

I suggest you edit your /etc/rc.local file to make this change persistant across reboots.

sudo nano /etc/rc.local

thiagoa

# Using these pry gems -- copy to your Gemfile
# group :development, :test do
  # gem 'pry', '>= 0.14.1' # Console with powerful introspection capabilities
  # # Need to use master of pry-byebug to use latest pry version
  # gem 'pry-byebug', github: 'deivid-rodriguez/pry-byebug' # Integrates pry with byebug
  # gem 'pry-doc' # Provide MRI Core documentation
  # gem 'pry-rails' # Causes rails console to open pry. `DISABLE_PRY_RAILS=1 rails c` can still open with IRB
  # gem 'pry-rescue' # Start a pry session whenever something goes wrong.
  # gem 'pry-theme' # An easy way to customize Pry colors via theme files
  #

thiagoa

For each Ruby module/class, we have Ruby methods on the left and the equivalent
Clojure functions and/or relevant notes are on the right.

For clojure functions, symbols indicate existing method definitions, in the 
clojure namespace if none is explicitly given.  clojure.contrib.*/* functions can
be obtained from http://github.com/kevinoneill/clojure-contrib/tree/master,
ruby-to-clojure.*/* functions can be obtained from the source files in this
gist.

If no method symbol is given, we use the following notation:

thiagoa

;; Align command !!!

;; from http://stackoverflow.com/questions/3633120/emacs-hotkey-to-align-equal-signs
;; another information: https://gist.github.com/700416
;; use rx function http://www.emacswiki.org/emacs/rx


(defun align-to-colon (begin end)
  "Align region to colon (:) signs"
  (interactive "r")

thiagoa

Adding Sinon to WebPack

• Open your project (if you're using WebPack, obviously)

• npm install sinon --save-dev

• You should now have Sinon in your node modules and listed in your package.json file

• In your tests, require Sinon: var sinon = require('sinon');

thiagoa

Types of index scans

Indexes

Sequential Scan:

• Read every row in the table
• No reading of index. Reading from indexes is also expensive.