David Liman dvliman

Product engineer. Life long student.

dvliman / gist:1379940

Created November 20, 2011 07:45

calendar in terminal

cal | sed "s/.*/ & /;s/ $(date +%e) / [] /"

dvliman / bpnn.py

Created November 21, 2011 08:25

neural network python

	# Back-Propagation Neural Networks
	#
	# Written in Python. See http://www.python.org/
	# Placed in the public domain.
	# Neil Schemenauer <[email protected]>

	import math
	import random
	import string

dvliman / bpnn.rb

Created November 21, 2011 08:26

neural network ruby

	# Back-Propagation Neural Networks
	# Written in Ruby with NArray. See http://narray.rubyforge.org/
	#
	# This program is a translation of bpnn.py written by Neil Schemenauer <[email protected]>
	# The original source is available at http://python.ca/nas/

	require "narray"

	# calculate a random number where: a <= rand < b
	class NArray

dvliman / google-contacts-authsub.html

Created December 28, 2011 08:37 — forked from boazsender/google-contacts-authsub.html

Boilerplate for authsubbing a user to grant permissions to their contacts, and loading in an arbitrary number of their contacts into the page.

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<script src="http://code.jquery.com/jquery.js"></script>
	<script src="http://google.com/jsapi"></script>
	<script src="google-contacts-authsub.js"></script>
	</head>
	<body>
	<!-- Google requires an image to be on the page -->
	<img src="https://localhost/img/1px.png">

dvliman / rspec-syntax-cheat-sheet.rb

Created January 25, 2012 21:01 — forked from dnagir/rspec-syntax-cheat-sheet.rb

RSpec 2 syntax cheat sheet by example

	# RSpec 2.0 syntax Cheet Sheet by http://ApproachE.com

	# defining spec within a module will automatically pick Player::MovieList as a 'subject' (see below)
	module Player
	describe MovieList, "with optional description" do

	it "is pending example, so that you can write ones quickly"

	it "is already working example that we want to suspend from failing temporarily" do
	pending("working on another feature that temporarily breaks this one")

dvliman / gist:2795800

Created May 27, 2012 01:18

	package com.dvliman.tenten.model;

	import java.util.List;

	public class Base {

	public enum Status {
	ACTIVE,
	INACTIVE,
	DELETED,

dvliman / api.rb

Created June 22, 2012 21:41 — forked from lucatironi/api.rb

Snippets for an API with grape

	# Server App
	# This file must be in lib/myapp/api.rb
	module MyApp
	module Entities
	class Products < Grape::Entity
	expose :id, :code, :name, :short_description
	expose :description, :unless => { :collection => true }
	expose (:category) { \|model, options\| model.category.name }
	expose (:brand) { \|model, options\| model.brand.name }
	end

dvliman / gist:3185824

Created July 27, 2012 02:14

latency

	execute typical instruction 1 nanosec 1/1,000,000,000 sec
	fetch from L1 cache memory 0.5 nanosec
	branch misprediction 5 nanosec
	fetch from L2 cache memory 7 nanosec
	Mutex lock/unlock 25 nanosec
	fetch from main memory 100 nanosec
	send 2K bytes over 1Gbps network 20,000 nanosec
	read 1MB sequentially from memory 250,000 nanosec
	fetch from new disk location (seek) 8,000,000 nanosec
	read 1MB sequentially from disk 20,000,000 nanosec

dvliman / gist:3209234

Created July 30, 2012 19:09

def require_all

	def require_all(path)
	glob = File.join(File.dirname(__FILE__), path, '*.rb')
	Dir[glob].each do \|f\|
	require f
	end
	end

dvliman / sudoku_solver.cpp

Created August 14, 2012 02:31 — forked from keveman/sudoku_solver.cpp

Sudoku solver in C++11