Scott Raymond sco

Say what you mean. Bear witness. Iterate. Formerly: @airbnb, @facebook, @Gowalla co-founder, @oreilly author.

sco / gist:12089

Created September 22, 2008 18:32

	class Array

	def weighted_random(weight_method=:weight)
	return nil if empty? # return nil if there's no elements
	elements = sort_by { Kernel.rand } # shuffle the elements.
	weights = elements.map(&weight_method) # get the weight for each element (e.g.: 5, 10, 2, 0, 1, 5).
	point = Kernel.rand * weights.sum # pick a random point between zero and the sum of the weights.
	elements.zip(weights).each do \|e, weight\| # walk through each element,
	return e if weight >= point # and if its weight is >= the point, return it
	point -= weight # otherwise subtract the element's weight from the point

sco / gist:12334

Created September 23, 2008 16:56

	require 'timeout'

	class RequestTimeout < Merb::Rack::Middleware

	def initialize(app, seconds)
	super(app)
	@seconds = seconds
	end

	def deferred?(env)

sco / couchdb.yml

Created October 9, 2008 18:17

initializing couchrest in a merb app

sco / rack.rb

Created December 9, 2008 17:53

	odds_server = Proc.new do \|env\|
	if env['PATH_INFO'] == '/odds'
	[200, {'Content-Type'=>'application/json'}, '{claim_code:"123-sdfjhsdf"}']
	else
	[404, {}, '']
	end
	end

	run Rack::Cascade.new([odds_server, Merb::Rack::Application.new])

sco / jw-nav.html

Created January 31, 2009 21:37

minimal version of jacobswellchurch.org nav markup & styles

	<html>
	<head>
	<title>JW Nav</title>

	<style>

	/* reset margins and padding on every element */
	* { margin: 0; padding: 0; }

	/* style the whole page */

sco / fake_simple_db.rb

Created February 1, 2009 21:09

	require 'net/http'
	require 'rubygems'
	require 'json'

	# Mimics the interface of RightAws::SdbInterface, using CouchDB for persistence.
	#
	# FS = FakeSimpleDB.new('myapp')
	# FS.create_domain('mydb')
	# FS.put_attributes('mydb', 'myitem', { 'Jon' => ['foo', 'bar'] })
	# FS.get_attributes('mydb', 'myitem')

sco / StompService.h

Created March 2, 2009 19:32

	//
	// StompService.h
	// Objective-C Stomp Client
	//
	// Implements the Stomp Protocol v1.0, as described here: http://stomp.codehaus.org/Protocol
	// Requires the AsyncSocket library: http://code.google.com/p/cocoaasyncsocket/
	//
	// This class is in the public domain.
	// by Scott Raymond <[email protected]>.
	//

sco / CustomNavigationBar.h

Created March 4, 2009 01:53

	@interface CustomNavigationBar : UINavigationBar {
	UIImageView *backgroundView;
	}
	@end

	@implementation CustomNavigationBar

	- (void)setBackgroundImage:(UIImage*)image {
	if(image == NULL){
	return;

sco / cache_cache.rb

Created March 26, 2009 12:41

	require 'memcached'

	# Provides a hybrid of memoization and memcacheing. Designed for storing an entire (small)
	# table in memory, in every instance of the app. Works well for reference-type tables
	# (e.g., Category) which won't ever get big or change often, but are read-heavy. This
	# allows you to avoid joins, but also avoid the n+1 queries antipattern.
	#
	# A pure memoization solution fails when the data does change -- all app instances have
	# to be restarted for the in-memory caches to be correct. A pure memcached solution solves
	# that, but requires a largish amount of data to be retrieved from memcached for every

sco / facebook_client.rb

Created March 26, 2009 12:56

	# Lo-fi client for the Facebook API. E.g.:
	#
	# fb = FacebookClient.new(:api_key => 'api-key', :secret => 'secret')
	# fb.call 'users.getInfo', :session_key => 'session-key', :uids => 'user-id', :fields => 'birthday'
	#
	# by Scott Raymond <[email protected]>
	# Public Domain.
	#
	class FacebookClient
	def initialize(default_params={})