andkerosine

$stack, $draws = [], {}

def method_missing *args
  return if args[0][/^to_/]
  $stack << args.map { |a| a or $stack.pop }
  $draws[$stack.pop(2)[0][0]] = args[1] if args[0] == :<
end

class Array
  def +@

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

hartym

stashgrep() {
  for i in `git stash list | awk -F ':' '{print $1}'`; do
    git stash show -p $i | grep -H --label="$i" "$1"
  done
}

keeguon

[ 
  {name: 'Afghanistan', code: 'AF'}, 
  {name: 'Åland Islands', code: 'AX'}, 
  {name: 'Albania', code: 'AL'}, 
  {name: 'Algeria', code: 'DZ'}, 
  {name: 'American Samoa', code: 'AS'}, 
  {name: 'AndorrA', code: 'AD'}, 
  {name: 'Angola', code: 'AO'}, 
  {name: 'Anguilla', code: 'AI'}, 
  {name: 'Antarctica', code: 'AQ'}, 

zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')