Siddhant siddhant-mohan

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 / encrypt_decrypt.rb

Last active February 2, 2026 15:13

Basic encrypt and decrypt Strings in Ruby with deterministic salt or IV, generate and store random salt and IV in production

	require 'openssl'

	class String
	CIPHER_NAME = 'aes-256-cbc'.freeze
	PBKDF_ITER = 200_000
	KEY_LEN = 32 # 256 bits
	SALT_CONST = "fixed-global-salt-v1".freeze
	IV_SALT_CONST = "fixed-iv-salt-v1".freeze

	def encrypt(password)

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 / 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