the-teacher

- options = options_for_select(Landing::TYPES.collect{ |name| [ t(".#{name}"), name ] }, @landing.landing_type)
= f.select :landing_type, options

the-teacher

class @App
  @kb_suggest = (request, response) ->
    response [{
      label: 'label'
      value: 'key'
    }]

$('#landing_iata_one').autocomplete
  source: App.kb_suggest

the-teacher

$ ->
  $('.flash_msgs').on 'click', 'a.close', ->
    $(@).parent().hide()

the-teacher

ECHO OFF

cls

ECHO.
ECHO FILE NAME

ECHO %0

ECHO.

the-teacher

Prepare
  apt-get update && apt-get upgrade
  apt-get -f install
  apt-get install dialog

Base 
  apt-get install build-essential bison openssl libreadline6 libreadline6-dev curl git-core zlib1g zlib1g-dev libssl-dev libyaml-dev libsqlite3-0 libsqlite3-dev sqlite3 libxslt1.1 libxslt1-dev libxml2 libxml2-dev libxslt-dev autoconf libc6-dev -y

ImageMagick
  apt-get install aptitude -y

the-teacher

#!/bin/sh
### BEGIN INIT INFO
# Provides:          unicorn_<%= application %>
# Required-Start:    $remote_fs $syslog
# Required-Stop:     $remote_fs $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Manage unicorn server
# Description:       Start, stop, restart unicorn server for a specific application.
### END INIT INFO

the-teacher

1.8.7 :009 > Benchmark.bm{ |b| b.report{ 100_000.times{ Rails.root + 'a/b/c' } } }
      user     system      total        real
  4.890000   0.010000   4.900000 (  5.407428)
 => true 
1.8.7 :010 > Benchmark.bm{ |b| b.report{ 100_000.times{ Rails.root.to_s + 'a/b/c' } } }
      user     system      total        real
  0.220000   0.000000   0.220000 (  0.272255)
 => true 
1.8.7 :011 > Benchmark.bm{ |b| b.report{ 100_000.times{ "#{Rails.root}/a/b/c" } } }
      user     system      total        real

the-teacher

@log = -> console.log.apply(console, arguments)

class @Animal
  constructor: (name = 'Abstract animal') ->
    @name = name

Animal::eat = (food) ->
  log(food)

class @Dog extends Animal

the-teacher

lng_corr = 250 / (Math.cos(coordinates[1] * Math.PI / 180) * 111.11) / 2
lat_corr = 250 / 111.11 / 2

query = City.find().where('coordinates.lng').gt(coordinates[0] - lng_corr).lt(coordinates[0] + lng_corr).where('coordinates.lat').gt(coordinates[1] - lat_corr).lt(coordinates[1] + lat_corr)

the-teacher

require 'fileutils'

ROOT_PATH = File.dirname File.absolute_path(__FILE__)
src_dir   = ROOT_PATH + "/src"
dest_dir  = ROOT_PATH + "/dest"

src_dirs = Dir.glob(src_dir + '/*').select{|f| File.directory? f }

src_dirs.each do |dir|
  dir_name    = dir.split('/').last