Skip to content

Instantly share code, notes, and snippets.


FWIW: I'm not the author of the content presented here (which is an outline from Edmond Lau's book). I've just copy-pasted it from somewhere over the Internet, but I cannot remember what exactly the original source is. I was also not able to find the author's name, so I cannot give him/her the proper credits.

Effective Engineer - Notes

What's an Effective Engineer?

rofr / transcript.txt
Created Sep 7, 2015
redis - the machine language of databases
View transcript.txt
INCR next_user_id //returns 1000
HMSET user:1000 name bart password ¤¤¤hash¤¤¤
HSET users bart 1000
ZADD followers:1000 1401267618 1234
ZADD following:1234 1401267618 1000
INCR next_post_id => 10343
HMSET post:10343 user 1000 time $time body ’Ay Caramba’
RPUSH posts:1000 10343

Hello, visitors! If you want an updated version of this styleguide in repo form with tons of real-life examples… check out Trellisheets!

Trello CSS Guide

“I perfectly understand our CSS. I never have any issues with cascading rules. I never have to use !important or inline styles. Even though somebody else wrote this bit of CSS, I know exactly how it works and how to extend it. Fixes are easy! I have a hard time breaking our CSS. I know exactly where to put new CSS. We use all of our CSS and it’s pretty small overall. When I delete a template, I know the exact corresponding CSS file and I can delete it all at once. Nothing gets left behind.”

You often hear updog saying stuff like this. Who’s updog? Not much, who is up with you?

View gist:20500f5e21663afe3b57

###Edit this file


###Add this line anywhere inside the http { } block:

ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

###Go to your Forge panel and restart Nginx

dlo / prefixes.sql
Last active Nov 25, 2021
PostgreSQL procedure that concatenates all prefix substrings for a given string. Helpful for generating full-text search indices.
View prefixes.sql
CREATE FUNCTION prefixes(varchar, integer) RETURNS varchar AS $$
result varchar;
minlength integer;
WITH RECURSIVE t(value, n) AS (
SELECT $1, length($1)
SELECT substring(value for n-1), n-1 FROM t WHERE n>minlength
consti / hosts
Last active Jan 22, 2022
/etc/hosts to block shock sites etc.
View hosts
# This hosts file is brought to you by Dan Pollock and can be found at
# You are free to copy and distribute this file for non-commercial uses,
# as long the original URL and attribution is included.
#<localhost> localhost localhost.localdomain broadcasthost
::1 localhost
$ = jQuery
TIMEOUT = 20000
lastTime = (new Date()).getTime()
setInterval ->
currentTime = (new Date()).getTime()
# If timeout was paused (ignoring small
# variations) then trigger the 'wake' event
if currentTime > (lastTime + TIMEOUT + 2000)
nateberkopec / secure_headers.rb
Created Mar 28, 2013
Example of a simple Rack middleware for scrubbing your Rack headers of sensitive information.
View secure_headers.rb
class Rack::SecureHeaders
def initialize(app, options = {})
@app, @options = app, options
def call(env)
response =
# [status, headers, response] = response
mattt /
Last active Sep 28, 2021
A list of methods and properties conforming to `UIAppearance` as of iOS 12 Beta 3

Generate the list yourself:

$ cd /Applications/*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
  sed 's/UI_APPEARANCE_SELECTOR//g'   | \
View jquery.insert.js
var insertAtCaret = function(value) {
if (document.selection) { // IE
sel = document.selection.createRange();
sel.text = value;
else if (this.selectionStart || this.selectionStart == '0') {
var startPos = this.selectionStart;