mmiliaus

worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

mmiliaus

#Strip HTML tags
  def strip_html(allowed = [])
    str = self.strip || ''
    str.gsub(/<(\/|\s)*[^(#{allowed.join('|') << '|\/'})][^>]*>/,'')
  end

mmiliaus

* instance_eval, class_eval, module_eval
* instance_eval, evaluates code on instance level:
class Bongas
  class << self
    def nu_kazka
      puts "Nu Kazka Bongas"
    end
  end
end
Bongas.instance_eval { nu_kazka } # -> "Nu Kazka Bongas"

mmiliaus

What JavaScript considers as False: false, null, undefined, '', 0, NaN.

---

Objects are passed around by reference. They are never copied:
var x = stooge;
x.nickname = 'Curly';
var nick = stooge.nickname;
    // nick is 'Curly' because x and stooge
    // are references to the same object

mmiliaus

# =stylesheet_include_tag
  def stylesheet_include_tag(filename)
    mtime = File.new(File.join(APP_PATH,"public","stylesheets","#{filename}.css")).mtime
    %Q(<link rel="stylesheet", href="/stylesheets/#{filename}.css?#{mtime.to_i}"></link>)
  end
...

mmiliaus

=config
# use colors in git output
git config --global color.ui true

=basics
git branch -d test //delete branch

=.gitignore file
*a         # ignore all with .a ext
!lib.a     # except file "lib.a"

mmiliaus

=users and groups
# add user into 'admin' group, only users in 'admin' group can use 'sudo'
sudo usermod -G admin username
# useradd defaults
/etc/default/useradd
# check to what groups user belongs to
id username

# ubuntu
adduser, addgroup

mmiliaus

    def match! battle, winner, loser
      r_a = winner.rating
      r_b = loser.rating
      max = battle.max.to_i
      min = battle.min.to_i
      th = ( max - min ) / 2

      e_a = 1.0 / ( 1 + 10 ** ( (r_b - r_a) / 400 ))
      e_b = 1.0 / ( 1 + 10 ** ( (r_a - r_b) / 400 ))

mmiliaus

def foo(x, y=10, **kwargs):
  # dictionaries  
  dict = {'a':1, 'b':23, 'c':'eggs'}
  del dict['b']
  dict.has_key('e')
  
  # list comprehension
  [x for x in range(5) if x%2 == 0]

  # exception

mmiliaus

canvas = document.createElement("canvas"),
ctx = canvas.getContext("2d"); 
	
canvas.className  = "myClass";
canvas.id = "myId";
canvas.width = image.width;
canvas.height = image.height;
	
ctx.drawImage(image, 0, 0); 
pixelData = ctx.getImageData(0, 0, image.width, image.height);