Vadim Brodsky VadimBrodsky

This guide has moved

To improve collaboration this guide is now available on GitHub.

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UPDATE a fork of this gist has been used as a starting point for a community-maintained "awesome" list: machine-learning-with-ruby Please look here for the most up-to-date info!

Resources for Machine Learning in Ruby

Gems

liblinear-ruby: Ruby interface to LIBLINEAR using SWIG

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

So yesterday brought the sad news that Google Reader is being killed off. C’est la vie it seems, given it was a Google product. In my search for an alternative I rediscovered Fever and decided to see if I could run it up for free on Heroku. Onwards...

Personally I think the news about Reeder is quite sad, as I would quite happily have paid for it as a service. In fact I like RSS so much that I actually shelled out the $30 for Fever when it first came out years ago (I was also pretty massive Shaun Inman fanboy if I’m being honest).

I ended up setting Fever aside because screw having to manage self-hosting for PHP and MySQL, right?

If you’re new to Fever I recommend going and checking it out, but also reading the post in response to the Google Reader announcement by Fevers author, Shaun, for a good list of what Fever is and isn’t.

Enough jibba-jabba!

Upload Travis CI builds to S3

This will demonstrate how to upload build files from Travis CI to S3.

NOTE: Keys have been changed to protect the innocent.

Step 1: Create an S3 policy.

Create an S3 ACL policy, see s3_policy.json for an example.

This is a plugin meant for Jekyll.

Example use:

Easily embed a YouTube video. Just drop this file in your _plugins directory.

{% youtube oHg5SJYRHA0 %}

Friendly URLs

By default, Rails applications build URLs based on the primary key -- the id column from the database. Imagine we have a Person model and associated controller. We have a person record for Bob Martin that has id number 6. The URL for his show page would be:

/people/6

But, for aesthetic or SEO purposes, we want Bob's name in the URL. The last segment, the 6 here, is called the "slug". Let's look at a few ways to implement better slugs.

	Vagrant.configure(2) do \|config\|
	# Every Vagrant development environment requires a box. You can search for
	# boxes at https://atlas.hashicorp.com/search.
	config.vm.box = 'ubuntu/trusty64'

	# Create a forwarded port mapping which allows access to a specific port
	# within the machine from a port on the host machine. In the example below,
	# accessing "localhost:8080" will access port 80 on the guest machine.
	config.vm.network "forwarded_port", guest: 3000, host: 3000


	.highlight {
	background-color: #efefef;
	padding: 7px 7px 7px 10px;
	border: 1px solid #ddd;
	-moz-box-shadow: 3px 3px rgba(0,0,0,0.1);
	-webkit-box-shadow: 3px 3px rgba(0,0,0,0.1);
	box-shadow: 3px 3px rgba(0,0,0,0.1);
	margin: 20px 0 20px 0;
	overflow: hidden;