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@rondy
rondy / Effective_Engineer.md
Last active December 4, 2025 21:25

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

Effective Engineer - Notes

What's an Effective Engineer?

@johncip
johncip / rails_eager_load.md
Last active December 28, 2024 15:12
Active Record eager loading strategies

N+1 query problem

  • ORMs make it easy to a query per loop iteration, which we want to avoid

eager_load

  • single query (left outer join)
  • can reference the other table's columns in where

preload

  • a few queries (one per table)
  • typically faster
@msurguy
msurguy / Instructions.md
Last active May 14, 2019 16:38
Daily reports in 5 minutes with Laravel and Morris.js

Follow this guide to integrate bar chart reports into your Laravel application. Reports like the following come with this guide:

  • Total number of Orders by day
  • Total number of Users subscribed by day
  • etc

The library used for the charts is: http://www.oesmith.co.uk/morris.js/

First put this into your page that will have the reports (in the Blade view) to include Morris library:

@emad-elsaid
emad-elsaid / mysql-backup.rb
Created March 4, 2014 12:40
backup mysql database and send it to your email script
#!/usr/bin/env ruby
require 'mail'
mysql_username = 'root'
mysql_password = '123456'
mysql_database = 'test'
system("mysqldump --user=#{mysql_username} --password=#{mysql_password} #{mysql_database} > backup.sql")
# Credit to :
@tjh
tjh / character_set_and_collation.rb
Created January 31, 2012 16:07
Convert all Rails table column collation and character set
#!/usr/bin/env ruby
# Put this file in the root of your Rails project,
# then run it to output the SQL needed to change all
# your tables and columns to the same character set
# and collation.
#
# > ruby character_set_and_collation.rb
DATABASE = ''
@artero
artero / launch_sublime_from_terminal.markdown
Last active October 13, 2025 19:00 — forked from olivierlacan/launch_sublime_from_terminal.markdown
Launch Sublime Text 2 from the Mac OS X Terminal

Launch Sublime Text 2 from the Mac OS X Terminal

Sublime Text 2 ships with a CLI called subl (why not "sublime", go figure). This utility is hidden in the following folder (assuming you installed Sublime in /Applications like normal folk. If this following line opens Sublime Text for you, then bingo, you're ready.

open /Applications/Sublime\ Text\ 2.app/Contents/SharedSupport/bin/subl

You can find more (official) details about subl here: http://www.sublimetext.com/docs/2/osx_command_line.html

Installation