Skip to content

Instantly share code, notes, and snippets.

View khoan's full-sized avatar

khoan

15 followers · 24 following
View GitHub Profile
@staltz
staltz / introrx.md
Last active June 9, 2025 13:06
The introduction to Reactive Programming you've been missing
@runeb
runeb / js-exif-rotate.html
Created May 23, 2014 10:49
Auto-rotate images locally in the browser by parsing exif data
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<input id="file" type="file" accept="image/*" />
<br/>
<h2>As read:</h2>
<img id="placeholder1" width=300/><br/>
<h2>Rotated by exif data:</h2>
<img id="placeholder2" width=300/>
<script>
@dhh
dhh / ticket.rb
Created March 20, 2014 20:13
class Ticket < ActiveRecord::Base
belongs_to :grouper
belongs_to :user
validate :user_cant_be_blacklisted, on: :confirmation
validate :user_cant_double_book, on: :confirmation
validate :grouper_cant_be_full, on: :confirmation
validate :grouper_cant_have_occurred, on: :confirmation
@pvdb
pvdb / process_rss.rb
Last active December 14, 2022 10:50
Get real memory (resident set) used by current Ruby process
#
# This first version should work on Mac OS X and Linux, but it spawns a process
#
# http://stackoverflow.com/questions/7220896/
# https://github.com/rdp/os/blob/master/lib/os.rb#L127
# http://www.ruby-doc.org/core-2.0/Process.html
#
# A better - but more complicated - way to achieve the same is documented here:
#
# https://build.betterup.com/tracking-a-processs-memory-usage-in-ruby/
@dypsilon
dypsilon / frontendDevlopmentBookmarks.md
Last active May 22, 2025 08:10
A badass list of frontend development resources I collected over time.
@randomecho
randomecho / australian-postcodes.sql
Last active January 16, 2025 03:34
Australian postcodes (with states and suburb names) geocoded with latitude and longitude.
/*
Taken and cribbed from blog.datalicious.com/free-download-all-australian-postcodes-geocod
May contain errors where latitude and longitude are off. Use at own non-validated risk.
*/
SET NAMES utf8;
SET sql_mode = 'NO_AUTO_VALUE_ON_ZERO';
DROP TABLE IF EXISTS postcodes_geo;
@lbdremy
lbdremy / click-reference-affiliate-networks.md
Last active December 4, 2023 16:14
click reference parameter in a bunch of affiliate networks. Feel free to contribute, add and remove errors.

- Affiliate network name - &parameter=value_of_the_click_reference_here_CLICKREF

  • Advortis - &xref1=CLICKREF
  • Affiliate Future - &tracking=CLICKREF
  • Affiliate Window - &clickref=CLICKREF
  • Affilinet - &subid=CLICKREF
  • Aflite - &aref=CLICKREF
  • Brand Conversions - &subid=CLICKREF
  • Buyat - &LID=CLICKREF
  • Carpet Right Affiliates - &link_ref=CLICKREF
  • ClixGalore - &OID=CLICKREF
@camertron
camertron / measure.rb
Created June 15, 2012 22:48
Measure the memory taken by a Ruby object (by Robert Klemme)
#!/bin/env ruby
# lazy hack from Robert Klemme
module Memory
# sizes are guessed, I was too lazy to look
# them up and then they are also platform
# dependent
REF_SIZE = 4 # ?
OBJ_OVERHEAD = 4 # ?
@tfausak
tfausak / ios-8-web-app.html
Last active May 20, 2025 16:27
iOS 8 web app http://taylor.fausak.me/2015/01/27/ios-8-web-apps/
<!doctype html>
<!-- http://taylor.fausak.me/2015/01/27/ios-8-web-apps/ -->
<html>
<head>
<title>iOS 8 web app</title>
<!-- CONFIGURATION -->
@norman
norman / earthdistance.rb
Last active October 7, 2024 14:15
Geographic Searches With Postgres's Earthdistance and Cube Extensions
#!/usr/bin/env ruby
=begin
= Geographic Searches With Postgres's Earthdistance and Cube Extensions
This program shows how to easily create a Postgres database that uses the Cube
and Earthdistance extensions to perform fast queries on geographic data.
Briefly, the problem this code solves is "show me all places within 50
kilometers of New York City."