You can write simple class methods which will add class methods to a derived class. For learning ruby2, you can check out the ebook version of the pickaxe book at programming ruby 1. Metaprogramming ruby for greater good by jarkko of bear. Learning metaprogramming doesnt have to be difficult or boring. Textbooks with no cost ebook downloading accessible download metaprogramming ruby 2. What readers are saying about metaprogramming ruby reading this book was like diving into a new world of thinking. Rails relies heavily on metaprogramming to make the interface as intuitive as it is, without reams of code to catch every possible scenario. This thoroughly revised and updated second edition of the bestselling metaprogramming ruby explains. Ruby is a wonderful language because it gives you the opportunity to write beautiful and expressive code without compromising readability. Build a ruby gem pdf, epub, mobi with source code and.
Erb allows you to put ruby codes inside an html file. The following chapters tell the story of a week in the life of a newly hired ruby programmer and his or her more experienced colleague. Part i, metaprogramming ruby, is the core of the book. In some cases, this allows programmers to minimize the number. Contribute to gosukiwiepubber development by creating an account on github. Ruby provides a program called erb embedded ruby, written by seki masatoshi. An adventure in metaprogramming morethis bonus ebook follows the stepbystep, testdriven development of the naught gem for. Write powerful ruby code that is easy to maintain and change. Yes, its a weird name, but its a powerful and dangerous tool. If you are curious, join the ruby metaprogramming course on rubylearning. A few of the key topics that you will learn in this course are.
Ruby for metaprogramming closed ask question asked 11 years, 2 months ago. Add more powerful abstractions and reduce duplication through ruby that writes ruby. July 6th, 2015 the ruby book bundle is live bundle, rails, ruby, sale a few fellow. Youve learned the basics of writing code with code in metaprogramming ruby. In part one we looked at what metaprogramming is and how it works. Metaprogramming, defined as writing code that writes code by why the lucky stiff, makes scaffolding, associations, validations, and the many magical parts of rails possible. Ruby metaprogramming, one of the most interesting aspects of ruby, enables the programming language to achieve an extreme level of expressiveness. Getting started with ruby language, casting type conversion, operators, variable. After writing my last post on rails plugin idioms, i realized that ruby metaprogramming, at its core, is actually quite simple. Once the domain of expert rubyists, metaprogramming is. Metaprogramming is a powerful technique that sets ruby apart from other contemporary languages. This book describes metaprogramming as an essential component of ruby.
Program like the ruby pros facets of ruby perrotta, paolo on. Metaprogramming is the writing of computer programs with the ability to treat programs as their data. As a ruby programmer, you already know how much fun it is. Erb reads along, word for word, and then at a certain point, when it. Metaprogramming makes up for that statement, as it allows you to accomplish so much more with so little effort. Awesome print is a gem for pretty printing ruby objects. Now take it to the next level with eval, object lifecycle hooks, and more. Another aspect of metaprogramming that ruby gives us. Metaprogramming is the writing of computer programs that write or manipulate other programs or themselves as their data, or that do part of the work at compile time that would otherwise be done at runtime.
Monkey patching is an object oriented programming technique that allows developers to. Ruby inherits characteristics from various languageslisp, smalltalk, c, and perl, to name a few. It comes down to the fact that all ruby code is executed codethere is no separate compile or runtime phase. An adventure in metaprogramming more this bonus ebook follows the stepbystep, testdriven development of the naught gem. In this article, toptal engineer nikola todorovic demystifies. Starting off the list for examples of metaprogramming is monkey patching. Download metaprogramming ruby 2 livre epub gratuit. This guest post is by gavin morrice, managing director of katana code ltd. If you installed epub parser by gem command, you can also generate. For gem authors and application developers alike, this book lays down the foun dation everyone needs to harness the full power of ruby.
This is totally possible with rubys metaprogramming. Dig under the surface and explore rubys most advanced feature. Programming challenges that let you experiment and play with some of the most outthere metaprogramming concepts. Fast metaprogramming with truffle rubykaigi 2015 youtube. Ruby is a powerful, generalpurpose programming language that can be applied to any task. Confident ruby is, first and foremost, a book about joy. Implementing metaprogramming techniques can drastically eliminate duplicate code, making your applications far easier to maintain and build. Once you understand the principles of ruby, including the object model, scopes, and eigenclasses, youre on your way to applying metaprogramming both in your daily work and in your fun, afterhours projects. Before we ride on rails, let us recapitulate a few points of ruby, which is the base of rails. Get started with the greatest programming language. Using java alone would now feel like entering a sword. Use features like bookmarks, note taking and highlighting while reading metaprogramming ruby.
Starting with the core principles, such as syntax and best practices, and up to advanced topics like metaprogramming and big data analysis. This makes metaprogramming ruby an ideal book to read when diving into both the decision making process and the coding process rather than just finished samples of code. What is the best book for learning ruby now that 2. Learn ruby metaprogramming for great good sitepoint. Awesome print works with irb as well as pry, but for the time being, we will be focused on the irb code path. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. The result, whether you like the style or not, is a book that teaches problem solving the ruby way while explaining the ruby notion of metaprogramming in a clear manner. Presentation mode open print download current view. I tried a mix of java and jruby metaprogramming on a recent project.
More than 40 million people use github to discover, fork, and contribute to over 100 million projects. A good example is the dynamic finder methods in activerecord like. Once the domain of expert rubyists, metaprogramming is now accessible to. Once the domain of expert rubyists, metaprogramming is now accessible to programmers of all levels. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments. Provides the core skills required to become a ruby programmer. The pdfreader library implements a pdf parser conforming as much as possible to the pdf specification from adobe. What is metaprogramming is and how can we use it in our everyday code by cristian planas, cto at playfulbet. Confident ruby in pdf, epub, and kindle formats the confident ruby companion screencast more watch over my shoulder as i apply concepts and patterns from the book to the discourse codebase. I discovered most of this while building dwemthys array for my cartoon ruby book. I am currently reading a great book called metaprogramming ruby, an indepth guide to dynamic code and code generation in ruby.
Metaprogramming ruby 2 program like the ruby pros by paolo perrotta. The dynamic nature of ruby makes it really easy to do metaprogramming. Plan like the ruby advantages features of ruby kindle release metaprogramming ruby 2 plan like the ruby advantages ebook particulars publication 250 web pages publisher practical bookshelf 1scapital t edition september 18 2014 terminology english language. Covers how to use the most popular ruby gem libraries. Now see how to unleash its power, digging under the surface and exploring the languages most advanced features. Another aspect of metaprogramming that ruby gives us is the ability to generate new code during runtime. Metaprogramming ruby program like the ruby pros by paolo perrotta. These are books for sale on amazon which are very helpful and detailed about ruby metaprogramming the ruby object model and metaprogramming by dave thomas metaprogramming ruby. Thank you for reading this ruby metaprogramming learning guide. Rubys object model is the land in which metaprogramming. This is the secret to rails and rubyx11 and so many other examples of metaprogramming in ruby. Metaprogramming ruby 2 program like the ruby pros paolo perrotta the pragmatic bookshelf dallas, texas raleigh, north carolina. When hes not writing code hes usually weightlifting. It is because of this very feature that many gems, such as rspec and activerecord, can work the way they do.
You might have heard the term metaprogramming before, but what is it and what does it have to do with ruby. Metaprogramming ruby for greater good jarkko wrote this on sep 29th, 2014 11. Program like the ruby pros kindle edition by perrotta, paolo. In this book, youll learn metaprogramming as an essential component of ruby and discover the deep, nonobvious details of. It allows compact and elegant solutions to seemingly intractable problems. For those that might now know irb is the ruby repl distributed with mri, and written in ruby. This library supports making and editing epub books. Whether you are an experienced developer who wants to learn a new language or you are new to programming, this book is your comprehensive ruby coding guide. Ruby metaprogramming ruby is a very flexible language.
Everyday low prices and free delivery on eligible orders. Ruby metaprogramming tutorial part 1 send method youtube. There have been a lot of light bulb moments for me while reading. Gitter github actions status test coverage gem version. It provides programmatic access to the contents of a pdf file with a high degree of flexibility. Amazon gives you a epub version too, but it charges. Contribute to jugyoeeepub development by creating an account on github. Program like the ruby pros facets of ruby 1 by paolo perrotta isbn. Metaprogramming ruby, second edition makes mastering the language enjoyable. Sinatra is a ruby framework that is widely used in the industry. With metaprogramming, you can produce elegant, clean, and beautiful programs. To start off, lets look at the wikipedia definition.
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