The Bastards Book of Ruby. For journalists and researchers, being able to web-scrape is perhaps one of the most compelling reasons to learn programming.
Agencies and organizations don't always release their information in nicely-formatted databases. Learning to web scrape allows you to gather, in an automated fashion, freely available data in virtually any kind of online format. It's also one of the best ways to practice programming because the end goal is clear: either you have the data or you don't. And there's little harm to be done, provided your program scrapes at a reasonable rate. This chapter introduces the strategy of web scraping with a very non-technical overview of how websites work. Scraping: The big picture Rather than cover the concepts of GET, POST, HTTP requests, here's a broad overview of what happens when you interact with a website and submit a request.
I will demonstrate each step as it works on Wikipedia. 1. This step consists of anything you, the user, does after a webpage has loaded. Open up. (Job) Opportunities for Ruby Developers (m/f) in Germany. Dear Fellows, I hope you don't mind posting job offers on this mailing list.
If you do, please drop us a line and we stop sending these exciting opportunities via your mailinglist. Biogems.info. Creating a Biogem is easy.
New biogems get added monthly! Biogem provides a set of tools for those Bioinformaticans who want to start coding an application, or a library for using/extending BioRuby's core library and sharing the code as a gem through rubygems.org. Biogems are automatically listed at biogems.info when the gem is pushed to rubygems.org, using the biogem tool, and the name of the gem starts with bio- (bio dash), e.g. bio-fasta or bio-gff3.
Biogem aims to encourage open source software development, and provide tools to support bazaar programming. In our interpretation: Every good work of software starts by scratching a developer's personal itch Release source code early and often With enough users, almost every problem is quickly known, and a fix obvious Many heads are inevitably better than one Good programmers know what to write. We suggest for bioinformatics Use Ruby and Biogem software generation, or do not repeat yourself (DRY)! Further reading: Other important links. Creating and Distributing Gems with Bundler. SVD Recommendation System in Ruby.
By Ilya Grigorik on January 15, 2007 One day, a bunch of friends, who happened to be big Family Guy fans, decided to put together a site to rank and share their thoughts on the show.
Soon thereafter they had a Rails site up and running, and all was well, and other fans joined in hordes. A web 2.0 success! Then one day they realized that they could no longer track everyone's ratings, their user-base was too large, and so it occurred to one of the developers: "Wouldn't it be cool if we could use the collective knowledge of our whole community to recommend and rank episodes for each user individually? " Sounds familiar, right? Linear Algebra Refresher SVD methods are a direct consequence of a theorem in linear algebra: Ruby Reports. A free book about Ruport from the Ruby Reports Documentation Effort Tutorial Introduction to Ruport Getting Everything Running Some folks like to take baby steps as they enter a new technology, others like to dive right in and try to get a sense of the big picture.
Though we’ll try not to leave anyone behind, this chapter leans towards the deep dive approach. We’re going to start by building a real, fully functional report, explaining how things work along the way. Of course, we’ll need to get Ruport installed and running before we can do anything at all, so let’s take care of that now. The easiest way to install Ruport is by using RubyGems ( gem install ruport Associated with the Ruby Reports project, of which Ruport is the core component, is an officially maintained set of tools called ruport-util.
Gem install ruport-util Another associated project is acts_as_reportable, which provides Ruport with the ability to use ActiveRecord for data collection. Gem install acts_as_reportable tattle.