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Ruby on Rails Guides

Ruby on Rails Guides
Start Here Getting Started with Rails Everything you need to know to install Rails and create your first application. Models Active Record Basics This guide will get you started with models, persistence to database and the Active Record pattern and library.

http://guides.rubyonrails.org/

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Rails Beginner Cheat Sheet Bold words are what is really important e.g. the command and concept shown in the usage category. In the code usage and example columns these highlight the main part of the concept, like this: general_stuff.concept. In the same columns italic_words mark the arguments/parameters of a command/method. However italic words in the descriptions or general text denote more general concepts or concepts explained elsewhere in this cheat sheet or in general. The console (also called command line, command prompt or terminal) is just another way of interacting with your computer.

The Python Tutorial Python is an easy to learn, powerful programming language. It has efficient high-level data structures and a simple but effective approach to object-oriented programming. Python’s elegant syntax and dynamic typing, together with its interpreted nature, make it an ideal language for scripting and rapid application development in many areas on most platforms. Learning Rails in One Month I think just about anyone can learn to code in one month. Last August, I taught myself Ruby on Rails and was able to build my own application in under one month. Then I went on to win a hackathon on my own against 300 other experienced programmers.

Active Record Query Interface If you're used to using raw SQL to find database records, then you will generally find that there are better ways to carry out the same operations in Rails. Active Record insulates you from the need to use SQL in most cases. Code examples throughout this guide will refer to one or more of the following models: Ruby on Rails Tutorial: Learn Rails by Example Michael Hartl Contents Foreword Buckblog: Little Things: Refactoring with Hashes 14 November 2015 — The author presents a simple refactoring from case statement to hash table, as an ode to Ruby's "little things" — 2-minute read Ruby owes its popularity to an abundance of “little things”–small touches in just the right places that make all of its features come together in delightful ways. One of those little things, for me, is the humble Hash class.

Google preps wave of machine learning apps High performance access to file storage Google is preparing to unleash a wave of apps that get intelligence from its mammoth machine learning models. The apps will all rely on the neural networks Google has been developing internally to allow its systems to automatically classify information that has traditionally been tough for computers to parse. Why Use Ruby on Rails? My Experience as a Veteran Programmer Sometimes I hear people complaining about their clients, saying that they insist on using Rails, that they’ve had too much Kool Aid. If they’re recruiters, they almost feel sick in the stomach about having to find yet another Ruby on Rails ‘primadona’ developer. Then they pull out something similar to this amazingly ignorant comparison between Git and PHP to prove their point.

Active Record Basics 1 What is Active Record? Active Record is the M in MVC - the model - which is the layer of the system responsible for representing business data and logic. Active Record facilitates the creation and use of business objects whose data requires persistent storage to a database. It is an implementation of the Active Record pattern which itself is a description of an Object Relational Mapping system. File: HAML_REFERENCE Haml is a markup language that’s used to cleanly and simply describe the HTML of any web document, without the use of inline code. Haml functions as a replacement for inline page templating systems such as PHP, ERB, and ASP. However, Haml avoids the need for explicitly coding HTML into the template, because it is actually an abstract description of the HTML, with some code to generate dynamic content. Features

Five Active Record Features You Should Be Using · A Year of Commits 15 Nov 2015 Active Record is responsible for communicating with the persistence layer by default in Ruby on Rails applications. Using Active Record effectively and efficiently can greatly improve an application's code. Baidu says its massive deep-learning system is nearly complete Chinese search engine company Baidu is working on a massive computing cluster for deep learning that will be 100 times larger than the cat-recognizing system Google famously built in 2012 and that should be complete in six months, Baidu Chief Scientist and machine leaning expert Andrew Ng told Bloomberg News in an article published on Wednesday. The size Ng is referring to is in terms of neural connections, not sheer server or node count, and will be accomplished via heavy use of graphics processing units, or GPUs. That Baidu is at work on such a system is hardly surprising: Ng actually helped build that system at Google (as part of a project dubbed Google Brain) and has been one of the leading voices in the deep learning community for years. He joined Baidu in May, working out of the company’s Silicon Valley office, in order to help advance its capabilities in artificial intelligence. Andrew Ng shows off some of Baidu’s deep learning applications during a July robotics conference.

10 Reasons Beginners Should Learn Ruby on Rails If you're new to programming, what language should you learn first? I often get asked the question: “What programming language should I learn?” If you’re totally new to programming I highly recommend Ruby on Rails. In this post I’m going to give 10 reasons why I think new programmers should start with Ruby on Rails.

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