OpenData - Home The Bastards Book of Ruby The SCP Foundation Ruby-Doc.org: Documenting the Ruby Language Bitcoins can now be used to pay for Domino's Pizza Looking to capitalize on hungry computer users that collect Bitcoins, a new online startup called PizzaforCoins launched a simple site that allows consumers to order pizza and pay with the digital Bitcoin currency. Created by Matt Burkinshaw and Riley Alexander, customers go through a standard selection menu to choose options like type of crust, amount of sauce or cheese, different toppings and other add-ons like drinks or sides. Rather than a dollar figure, each item has a specific Bitcoin value. At the end of the transaction, the customer provides their current address and submits the total payment to a Bitcoin address supplied by the site. For example, a typical medium pizza with two toppings costs 0.56 BTC. According to the details on the site, a customer can typically expect their order within 35 to 80 minutes of ordering. In the future, Burkinshaw and Alexander plan to add online ordering capabilities for Papa Johns as well as Pizza Hut. Editors' Recommendations
Ruby Tutorial Ruby is a scripting language designed by Yukihiro Matsumoto, also known as Matz. It runs on a variety of platforms, such as Windows, Mac OS, and the various versions of UNIX. This tutorial gives a complete understanding on Ruby. This reference has been prepared for the beginners to help them understand the basic to advanced concepts related to Ruby Scripting languages. Before you start doing practice with various types of examples given in this reference, I'm making an assumption that you are already aware about what is a computer program and what is a computer programming language. For most of the examples given in this tutorial, you will find Try it option, so just make use of it and enjoy your learning. Try following example using Try it option available at the top right corner of the below sample code box: #! 1 - Ruby Quick Reference Guide A quick Ruby reference guide for Ruby Programmers. Ruby Quick Reference Guide 2 - Ruby Built-In Useful Functions Ruby Built-In Useful Functions
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Why's (Poignant) Guide to Ruby Read This Paragraph At my local Barnes and Noble, there is a huge wall of Java books just waiting to tip over and crush me one day. And one day it will. At the rate things are going, one day that bookcase will be tall enough to crush us all. It might even loop the world several times, crushing previous editions of the same Java books over and over again. And This Paragraph Too This is just a small Ruby book. But Don’t Read This One! Why’s (Poignant) Guide to Ruby is released under the Attribution-ShareAlike License. Now Back to Your Regularly Scheduled Paragraph I’ll try not to feel utterly rejected if this book doesn’t capture your fancy. Learning to Program A very basic, ground-level tutorial for the beginner to Ruby. Now, if you can’t seem to find the contents link on the left-hand side of the page, then here’s a link to the first page of the (Poignant) Guide. Welcome to the pirate radio of technical manuals.
Collusion for Chrome Ruby Programming/Reference/Objects/Enumerable Enumerable[edit] Enumerator appears in Ruby as Enumerable::Enumerator in 1.8.x and (just) Enumerator in 1.9.x. There are several different ways in which an Enumerator can be used: As a proxy for “each”As a source of values from a blockAs an external iterator 1. This is the first way of using Enumerator, introduced in ruby 1.8. An Enumerator is a simple proxy object which takes a call to #each and redirects it to a different method on the underlying object. require 'enumerator' # needed in ruby <= 1.8.6 only src = "hello" puts src.enum_for(:each_byte).map { |b| "%02x" % b }.join(" ") The call to ‘enum_for’ (or equivalently ‘to_enum’) creates the Enumerator proxy. newsrc = Enumerable::Enumerator.new(src, :each_byte) puts newsrc.map { |b| "%02x" % b }.join(" ") In ruby 1.9, Enumerable::Enumerator has changed to just Enumerator 2. In ruby 1.9, Enumerator.new can instead take a block which is executed when #each is called, and directly yields the values. 3. each_with_index[edit] find_all[edit]
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