Yannis Kolovos msroot

Make it real

Ideas are cheap. Make a prototype, sketch a CLI session, draw a wireframe. Discuss around concrete examples, not hand-waving abstractions. Don't say you did something, provide a URL that proves it.

Ship it

Nothing is real until it's being used by a real user. This doesn't mean you make a prototype in the morning and blog about it in the evening. It means you find one person you believe your product will help and try to get them to use it.

Do it with style

To get started with Rails we need to install the gem. From the terminal type:

{% terminal %}
$ gem install rails
Fetching: i18n-0.6.1.gem (100%)
Fetching: multi_json-1.3.6.gem (100%)
Fetching: activesupport-3.2.8.gem (100%)
...
{% endterminal %}

Ruby, RVM and Mountain Lion

Key problems

Mountain Lion (10.8) has three main difference compared to Lion (10.7):

XCode 4.4 does not install Command Line Tools by default
X11 isn't available anymore
The installed version of OpenSSL has some bugs

	require 'aws/s3'
	require 'digest/md5'
	require 'mime/types'

	## These are some constants to keep track of my S3 credentials and
	## bucket name. Nothing fancy here.

	AWS_ACCESS_KEY_ID = ENV['S3_KEY']
	AWS_SECRET_ACCESS_KEY = ENV['S3_SECRET']
	AWS_BUCKET = ENV['S3_BUCKET']

	#!/usr/bin/env bash
	# bash 4.1.5(1) Linux Ubuntu 10.04 Date : 2011-08-25
	#
	# _______________\| httpstatus : get HTTP status code
	#
	# Usage: httpstatus URL [timeout] [--code or --status] [see 4.]
	# ^message with code (default)
	# ^code (numeric only)
	# ^in secs (default: 3)
	# ^URL without "http://" prefix works fine.

	group :production do
	gem 'unicorn'

	# Enable gzip compression on heroku, but don't compress images.
	gem 'heroku-deflater'

	# Heroku injects it if it's not in there already
	gem 'rails_12factor'
	end

	require "net/http"
	http = Net::HTTP.new("example.com")
	http.open_timeout = 2
	http.read_timeout = 3 # Must be greater than open_timeout
	begin
	http.start
	begin
	http.request_get("/whatever?") do \|res\|
	res.read_body
	end

	# How Clearance / Hoptoad does it
	module Clearance
	class << self
	attr_accessor :configuration
	end

	def self.configure
	self.configuration \|\|= Configuration.new
	yield(configuration)
	end

	# from http://pushandpop.blogspot.com.au/2011/05/handling-gzip-responses-in-ruby-nethttp.html
	# i wanted syntax highlighting

	require 'net/http'

	debug = Proc.new{\|msg\| STDERR.puts "[#{Time.now.strftime('%Y-%m-%d %H:%M:%S')}] #{msg}" }

	page = nil
	http = Net::HTTP.new( "www.google.com", 80 )
	req = Net::HTTP::Get.new( "/search?num=20&hl=en&noj=1&q=test&btnG=Search", { "Accept-Encoding" => "gzip", "User-Agent" => "gzip" } )