hectorperez

# Gemfile
gem 'debugger', group :development, :test

include 'debugger' where you want to debug

Commands:
- help
- list
- pp variable (print variable content)
- irb (enter in irb; well, rails console)

hectorperez

date.beginning_of_day
date.end_of_day

hectorperez

within "#id" do
  expect(page).to have_content("hello")
end

hectorperez

def yep
  puts "method_name: #{__callee__}"
end

> yep
method_name: yep

Also: __method__

hectorperez

:e. (e-space-dot) gives a browsable current directory - then you can /-search for name fragments

# http://stackoverflow.com/questions/573039/any-shortcut-to-open-file-in-vim  

Others:

:split
:vsplit
Ctrl+w+w / Ctrl+Shift+w
:res +10 # http://vim.wikia.com/wiki/Resize_splits_more_quickly

hectorperez

jQuery._data( elem, "events" );

// http://stackoverflow.com/questions/2518421/jquery-find-events-handlers-registered-with-an-object

hectorperez

# to delete all lines containing "profile" (remove the /d to show the lines that the command will delete):
:g/profile/d

# to delete all lines that do not contain a pattern, use 'g!' (equivalent to 'v'), like this command to delete all lines that are not comment lines in a Vim script:
:g!/^\s*"/d
:v/^\s*"/d

# to delete all lines except those that contain "error" or "warn" or "fail"
:v/error\|warn\|fail/d

hectorperez

• Jim Weirich: The Building Blocks of Modularity – http://goo.gl/g4Nk
• Jim Weirich: SOLID Ruby – http://goo.gl/z3jd
• Sandi Metz: SOLID Object-Oriented Design – http://goo.gl/PDn6T
• Sandi Metz: Less – The Path to Better Design – http://goo.gl/VuTl4
• Demeter is for Encapsulation – http://is.gd/eeyLx
• Opinionated Modular Code – http://is.gd/eeyXm
• Scaling to Hundreds of Millions of Requests – http://vimeo.com/12814529
• Confident Code – http://goo.gl/VFLX
• Destroy All Software Screencasts – https://www.destroyallsoftware.com/screencasts
• Corey Haines: Fast Rails Tests – http://goo.gl/Va2gb

hectorperez

# http://stackoverflow.com/questions/7444522/is-it-possible-to-define-a-before-save-callback-in-a-module

class Model
  include MyModule
  #...
end

# lib/my_module.rb
module MyModule
  extend ActiveSupport::Concern

hectorperez

# http://www.elabs.se/blog/36-working-with-time-zones-in-ruby-on-rails

# DOs
2.hours.ago # => Fri, 02 Mar 2012 20:04:47 JST +09:00
1.day.from_now # => Fri, 03 Mar 2012 22:04:47 JST +09:00
Date.today.to_time_in_current_zone # => Fri, 02 Mar 2012 22:04:47 JST +09:00
Date.current # => Fri, 02 Mar
Time.zone.parse("2012-03-02 16:05:37") # => Fri, 02 Mar 2012 16:05:37 JST +09:00
Time.zone.now # => Fri, 02 Mar 2012 22:04:47 JST +09:00
Time.current # Same thing but shorter. (Thank you Lukas Sarnacki pointing this out.)