libin

Resources for Machine Learning in Ruby

Gems

• liblinear-ruby: Ruby interface to LIBLINEAR using SWIG

• classifier-reborn: Bayesian and LSI classification
  dependencies: GSL

libin

stems = ARGF.read
            .split
            .each_cons(2)
            .group_by { |word_pair| word_pair[0] }

def next_word ary
  ary[rand(ary.length).to_i][1]
end

e = Enumerator.new do |e|

libin

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.

---

libin

# Rake task to help migrating a rails 3 app to rails 4 strong_parameters.
# The task generates source code for helper methods for each model class
# to 'permit' the attributes.
# the generated methods are intended as starting point to copy&paste in the controller
# and than edit the permitted attributs.
# Some common names of non-editable attributes are already filtered,
# like 'id', 'password' or 'created_at'.
# The output is written to stdout so you can pipe it into a file
#
# Dependencies:

libin

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.

libin

realm=Sonatype Nexus Repository Manager
host=nexus.company.com
user=admin
password=admin123

libin

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

libin

---
- name: Deploy new site release
  user: deployer
  hosts: all

  tasks:

    - name: Fetch repo updates
      git: >
        repo=git@github.com:my/repo.git

libin

#!/bin/bash

# domainavailable
#   Fast, domain name checker to use from the shell
#   Use globs for real fun:
#     domainavailable blah{1..3}.{com,net,org,co.uk}
# Inspired by foca / giles:
#   http://gilesbowkett.blogspot.com/2009/02/simple-bash-domain-availability.html

trap 'exit 1' INT TERM EXIT

libin

SQL for reporting queries

Datatypes: JSON, HLL

JSON

• http://www.postgresql.org/docs/9.3/static/functions-json.html