tmm1

Ruby 2.1.0 in Production: known bugs and patches

Last week, we upgraded the github.com rails app to ruby 2.1.0 in production.
While testing the new build for rollout, we ran into a number of bugs. Most of
these have been fixed on trunk already, but I've documented them below to help
anyone else who might be testing ruby 2.1 in production.

@naruse I think we should backport these patches to the ruby_2_1 branch and
release 2.1.1 sooner rather than later, as some of the bugs are quite critical.
I'm happy to offer any assistance I can to expedite this process.

tarcieri

# Reclaim Ruby's global variable syntax for type annotations!
# This could be done with a transpiler similar to TypeScript

def hello($String who)
  puts "Hello, #{who}"
end

hello("world!")

adamwiggins

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

masonforest

Installing a Gem on Heroku from a Private GitHub Repo

Sometimes you want to use a gem on Heroku that is in a private repository on GitHub.

Using git over http you can authenticate to GitHub using basic authentication. However, we don't want to embed usernames and passwords in Gemfiles. Instead, we can use authentication tokens.

1. Get an OAuth Token from GitHub

---

First you will need to get an OAuth Token from GitHub using your own username and "note"

Potherca

Ever had the need to create a branch in a repo on Github without wanting (or being able) to access a local repo?

With the aid of [the Github API][1] and any online request app this is a piece of cake!

Just follow these steps:

1. Open an online request app (like apirequest.io, hurl.it pipedream.com, reqbin.com, or webhook.site)
2. Find the revision you want to branch from. Either on Github itself or by doing a GET request from Hurl: https://api.github.com/repos/<AUTHOR>/<REPO>/git/refs/heads
3. Copy the revision hash
4. Do a POST request from Hurl to https://api.github.com/repos/<AUTHOR>/<REPO>/git/refs with the following as the POST body :

xaviershay

# Implementation of Rails.cache backed by our database. We don't have high
# performance or space requirements, so using existing infrastructure for our
# caching needs is desirable.
class DatabaseCacheStore < ActiveSupport::Cache::Store
  class CacheEntry < ActiveRecord::Base
  end

  def self.migrate_up(m)
    m.create_table :cache_entries do |t|
      t.string   :key,                 :null => false

joho

ObjectSpace.each_object do |object|
  object.force_encoding("utf-8") if object.respond_to?(:force_encoding)
end

panicsteve

Dear soon-to-be-former user,

We've got some fantastic news!  Well, it's great news for us anyway.  You, on 
the other hand, are fucked.

We've just been acquired by:

[ ] Facebook
[ ] Google
[ ] Twitter

practicingruby

# coding: binary

class BMP 
  class Writer
    PIXEL_ARRAY_OFFSET = 54
    BITS_PER_PIXEL     = 24
    DIB_HEADER_SIZE    = 40
    PIXELS_PER_METER   = 2835 # 2835 pixels per meter is basically 72dpi

    def initialize(width, height)

wtaysom

module Where
  class <<self
    attr_accessor :editor
    
    def is_proc(proc)
      source_location(proc)
    end
    
    def is_method(klass, method_name)
      source_location(klass.method(method_name))