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@iandanforth
iandanforth / kmeansExample.py
Last active May 13, 2024 14:00
A pure python implementation of K-Means clustering. Optional cluster visualization using plot.ly.
#############################################################################
# Full Imports
from __future__ import division
import math
import random
"""
This is a pure Python implementation of the K-means Clustering algorithmn. The
original can be found here:
@wteuber
wteuber / encrypt_decrypt.rb
Last active April 30, 2025 19:20
Simply encrypt and decrypt Strings in Ruby.
require 'openssl'
class String
def encrypt(key)
cipher = OpenSSL::Cipher.new('DES-EDE3-CBC').encrypt
cipher.key = Digest::SHA1.hexdigest key
s = cipher.update(self) + cipher.final
s.unpack('H*')[0].upcase
end
@matthutchinson
matthutchinson / launch_instance.rb
Created January 23, 2012 15:10
Launching EC2 instance with aws-sdk gem
#!/usr/bin/ruby
# README
# gem install aws-sdk
# add this to bashrc
# export HT_DEV_AWS_ACCESS_KEY_ID=????
# export HT_DEV_AWS_SECRET_ACCESS_KEY=????
# put your pem file in ~/.ssh and chmod 0400
# for more info see; https://rubygems.org/gems/aws-sdk
@otobrglez
otobrglez / as3.rake
Created June 29, 2011 13:40
Rake task for uploading Rails 3.1 compiled assets to Amazon S3 storage
# 1) Put 's3' gem in Gemfile.
# 2) Create as3.yml configuration for S3
# 3) Create initializer for as3.yml
# 4) Make "assets" folder inside your bucket
# 5) After running task run "RAILS_ENV=production rake assets:precompile"
# 6) Invoke task by running "rake as3:upload"
namespace :as3 do
desc "Uploads compiled assets (public/assets) to Amazone AS3"
task :upload do