What's this about?
Since its initial publication in 2010, the Ruby on Rails Tutorial has been one of the leading introductions to web development. In this bestselling tutorial, you’ll learn how to develop and deploy real, industrial-strength web applications with Ruby on Rails, the open-source web framework that powers top websites such as Hulu, GitHub, Shopify, and Airbnb. This new 6th edition has been fully updated for Rails 6.
I’m also the founder of Tau Day and author of The Tau Manifesto, which argues that the true circle constant is the ratio of a circle’s circumference to its radius, not to its diameter. Conceived principally as a social hack, Tau Day and the number
τ=C/r have become an international phenomenon, striking a chord (sometimes literally) with math geeks all over the world, while inspiring a Vi Hart video, subverting the traditional circle constant at the Khan Academy, and even influencing the timing of MIT admissions announcements.