I would very much like to evangelize and enfuse in others this passion for ruby. I had a chance to look at what Neal Ford had to write on Fluent Interfaces in his book The Productive Programmer.. Granted, I heard him cover it … - Quote from The Ruby Object Model. The second element is a list of metadata (often line numbers when read from a file). The course has a good balance of interactive lectures and hands-on exercises… Look at this: Instead of duplicating these aliases all around, let's provide alias_method_chain(). advanced Metaprogramming Ruby: Ascent. This last is pretty important, because metaprogramming is arguably one of the most misused features of the Ruby … Reas, C. and Fr y, B. Metaprogramming is the act of writing code that operates on code rather than on data. From here, we edit the input to test to see if we have template injection. Try to do the following exercises. You are describing Ruby. These may be useful for programmers who have turned to Ruby from other languages or have not yet experienced the joys of Ruby metaprogramming. With the help of this course you can Learn metaprogramming! Now suppose you want to wrap logging behavior around the above greet(). Grab over 4 hours of video teaching the power of Ruby's metaprogramming and watch it whenever you want. Books ¶ ↑ Metaprogramming Ruby - Entire book. Ruby and in Rails. Exercise … define_method - ruby metaprogramming exercises . Exercises But first let’s finish the homework (day 3 has only a short one). It explains some of the more advanced features of Ruby including blocks and processes, threads, regular expressions, exception handling, singletons, and metaprogramming. Metaprogramming / send method / Essential Ruby, Ruby latest stable (v2_5_5) - 1 note - Class: Object send(*args) public You can use __send__ if the name send clashes with an existing method in obj. the focus is on a single method 'attribute' which # behaves much like the built-in 'attr', but whose properties require delving # deep into the depths of meta-ruby… Each page in the chapter has some introduction, a new concept, an exercise to try out, some more concepts with exercises and wrapping it up by using all the elements learned in that chapter in a slightly challenging exercise. MetaProgramming - Extending Ruby for Fun and Profit. More than 50 million people use GitHub to discover, fork, and contribute to over 100 million projects. Ruby 2.0 is a minor update to Ruby 1.9, unlike the more major updates from Ruby 1.8 to Ruby 1.9. Many ways to manipulate a single object are based on manipulating its single instance class (Singleton Class), and this makes metaprogramming simpler. The product team has a great new feature they want to add to your Ruby on Rails application: they … For example, when a User model is defined in Rails with email as an attribute, a method called find_by_email will be generated. The book is packed with: Pragmatic examples of metaprogramming in action, many of which come straight from real-life gems such as Rails. Ruby's facilities for text processing, numeric manipulation, collections, input/output, networking, and concurrency. Metaprogramming is code that writes code. Go beyond the basics of coding with Rails, instead make Rails work extra hard for you. Programming challenges that let you experiment and play with some of the most out-there metaprogramming concepts. Practice metaprogramming in ruby with the Ruby Metaprogramming … One can add create a … Practicing with ruby metaprogramming can deepen your understaning of how ruby works 'under the hood', which in turn will help you think through solving 'regular' problems more effectively. Ruby caught my attention due to its idiomatic constructs and powerful metaprogramming capabilities. Chapter 2, Monday: The Object Model, on page ?, provides a map to this land. Useful as a quick reference. You'll learn from real examples that lead to real results. The focus of this book is to demonstrate how metaprogramming happens in Ruby, what its limitations are and what kinds of problems are best solved using it. This book describes metaprogramming as an essential component of Ruby. If you are curious, join the Ruby Metaprogramming course on RubyLearning. ;-), Okay, let's discuss your code in the relevant thread in the Second Week Forum. There are several levels – Ruby Primer, Ruby Primer: Ascent, Metaprogramming Ruby and Metaprogramming Ruby… ', :laugh => 'finds this hilarious! The book covers a lot of core Ruby concepts that are critical to understand metaprogramming: Ruby's object model, method lookup, and module. There are several levels – Ruby Primer, Ruby Primer: Ascent, Metaprogramming Ruby and Metaprogramming Ruby… There are three dogs named Lassie, Fido and Stimpy. Exercises. ... Perrotta, P. (20 10) Metaprogramming Ruby. GitHub is where people build software. Read the following article: 3rd, review the scope of variables. Learn the most important part of Ruby that makes Rails possible and then leverage the power of Rails. Ruby supports metaprogramming, which is a technique that helps you to write code that creates code on its own. You can do all of your metaprogramming with define_method, but the code doesn't look a lot like the code you'd write in normal programming. Exercise 1.02: Assigning a Variable of One Data Type to a Different Type. This gives it more flexibility and is considered one of the most critical aspects to implementing metaprogramming in Ruby. Learn how to build your practical Ruby skills so that you can kick-start your career as a developer and rapidly prototype high-performing web applications. Class Method to 'Know' Class Name in Ruby? ... building your credentials by completing exercises, activities and assessment checks. Once you’re done, you should also re-do them at least once. In this vast book, there are a lot of exercises that include setup exercise, comment, and puns, character exercise, … Experience dynamic power. Could you please complete it? Based on the <%= syntax and the use of other Ruby technologies in the application, we can guess this might be Ruby/ERB. You will have to make the target phony. The first element of the tuple may be an atom or another tuple. There are three dogs named Lassie, Fido and Stimpy. This is usually because they, or the author of that codebase, or both didn’t understand metaprogramming. The book is packed with: Pragmatic examples of metaprogramming in action, many of which come straight from real-life gems such as Rails. I’ll start by stating the obvious: you should first and foremost do the Ruby Small Problems provided by Launch School. Metaprogramming is code that writes code. A complete Ruby tutorial with exercises and activities that help build key skills Structured to let you progress at your own pace, on your own terms Use your physical copy to redeem free access to the online interactive edition; Book Description. Get all the sample code and exercises and a copy of Ruby DSL Handbook in ePub, PDF, and mobi. It's very easy to extend and modify existing primitives at runtime. Most makefiles provide a target called clean. This allows us to modify the behavior of a program at run time. Ruby send method. Metaprogramming Ruby. Ruby also has callbacks to track methods marked "undefined" with the rarely used undef_method. An entire chapter is devoted to Ruby's metaprogramming capabilities. Exercise 1.02: Assigning a Variable of One Data Type to a Different Type. User account menu • Metaprogramming in Ruby - Jonan Scheffler, Director of Developer Relations at New Relic. Metaprogramming Ruby 2: Program Like the Ruby Pros Paolo Perrotta. Ruby 2.0 is a minor update to Ruby 1.9, unlike the more major updates from Ruby 1.8 to Ruby 1.9. Metaprogramming. Ruby provides the Module.included method to receive callbacks when this happens. Spell Book The excerpt from Metaprogramming Ruby. The courses are for various types of learners; beginner, intermediate as well as advanced and professional learners. This chapter introduces you to the most basic metaprogramming tech-niques. This is fairly unusual for a mainstream object oriented language. The course has a good balance of interactive lectures and hands-on exercises. Watch the Dave Thomas's presentation about Metaprogramming. This means it is able to create methods and classes dynamically. Metaprogramming. The 5-day Ruby on Rails Programming class led by Sang Shin has been great. This involves inspecting and modifying a program as it runs using constructs exposed by the language. You can add methods to classes, remove them or redefine them. Metaprogramming Ruby, Second Edition makes mastering the language enjoyable. I'd like to highly recommend this book. • Ruby’s object model is the land in which metaprogramming lives. Ruby as a really powerful set of tools for metaprogramming, but a good understanding of Ruby’s metamodel and some of its darker corners is required to fully benefit from them. Launch School’s Ruby Small Problems. Try to do the following exercises. Here are some things you can do with metaprogramming in the Ruby language: • Say you want to write a Ruby program that connects to an external system —maybe a web service or a Java program. Once you understand the principles of Ruby, including the object model, scopes, and eigenclasses, you're on your way to applying metaprogramming both in your daily work and in your fun, after-hours projects. Look at this simple example from Metaprogramming Ruby. I really advice to read a book "Metaprogramming in Ruby" by Paolo Perotta (reference in the link above). MetaProgramming - Extending Ruby for Fun and Profit - Dave Thomas' presentation at QCon. Ruby and in Rails. You can't set an instance variable with @foo=4; you have to call instance_variable_set('foo', 4). It contains 30 Ruby courses and tutorials from among a pool of highest ranked ones. Each page in the chapter has some introduction, a new concept, an exercise to try out, some more concepts with exercises and wrapping it up by using all the elements learned in that chapter in a slightly challenging exercise. First of all, things like [] (array index) and []= are just methods in Ruby… Ability to create classes, methods, functions, etc. There are several levels – Ruby Primer, Ruby Primer: Ascent, Metaprogramming Ruby and Metaprogramming Ruby: Ascent. See you! ruby Metaprogramming and keyword self confusing. Press J to jump to the feed. Ruby Metaprogramming – Complete Course. The Ruby Object Model - Dave Thomas' presentation at Scotland on Rails. What a gem. Think of it as a way to “undo” all of the build steps. MSGS = {:dance => 'is dancing', :poo => 'is a smelly doggy! From here, we edit the input to test to see if we have template injection. It means that a program can be designed to read, generate, analyze or … Exercise 1.01: Creating and Assigning Variables. Table of contents With … The callbacks match the ones for removed methods and are called method_undefined and singleton_method_undefined. You can do without editing original code! The major language changes in Ruby 2.0 are the addition of keyword arguments and the change to use … We'll cover it for completeness, but don't expect to see or use this very often. Ruby's String has no method that allows you to split a sentence into an Array of words. The focus of this book is to demonstrate how metaprogramming happens in Ruby, what its limitations are and what kinds of problems are best solved using it. Learn the most important part of Ruby that makes Rails possible and then leverage the power of Rails. Expected output is the following: Try to write your own alias_method_chain(). 1st, review the built-in, read-only variable self. Metaprogramming is a programming technique in which computer programs have the ability to treat other programs as their data. Ruby on Rails is a framework where code can do the exact same thing but look so very different, which can make it hard to maintain a project, especially across a development team where multiple individuals are contributing. Start writing elegant Ruby & Rails code and understanding all the magic behind Ruby on Rails.. No need to wait for the scheduled class. Metaprogramming is supported across many languages using many different techniques; you’ve probably used some of them already. Level up your Ruby skills on your own schedule. Exercise 2: Add your code to display 'I like metaprogramming!' Through the years I’ve witnessed many metaprogramming … Exercise 1.01: Creating and Assigning Variables. This fails, obviously, because there’s no method called everything_changes. Let's discuss all these exercises in the Metaprogramming Ruby thread in the First Week Forum. Practicing with ruby metaprogramming can deepen your understaning of how ruby works 'under the hood', which in turn will help you think through solving 'regular' problems more effectively. Just me doing metaprogramming exercises. # metakoans.rb is an arduous set of exercises designed to stretch # meta-programming muscle. Look Metaprogramming Ruby this simple example from Metaprogramming Ruby. I have been auditing the class all week thanks to Sang placing a notice on the SF Ruby meetup list and have learned a … Each page in the chapter has some introduction, a new concept, an exercise to try out, some more concepts with exercises and wrapping it up by using all the elements learned in that chapter in a slightly challenging exercise. The book covers a lot of core Ruby concepts that are critical to understand metaprogramming: Ruby's object model, method lookup, and module. Expected output is the following:. The third element is a list of the arguments. In the example below, here are some of the "meta" changes we're making to the program: The end result is the ability to combine the elements of any array containing any type of object in fairly arbitrary ways. Stack Overflow Public questions & answers; Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Jobs Programming & related technical career opportunities; … '}. Exercises ¶ ↑ Metaprogramming … :-D. Ruby Metaprogramming Study Note Try to hack the Sample Apps! Code that writes code. Metaprogramming Ruby Ruby Object Model. Let's start learning Ruby Metaprogramming! Note: If you have an idea in your mind. Here’s a brief list of some popular languages besides Ruby that support metaprogramming in some form. The book also includes a long and thorough introduction to the rich API of the Ruby platform, demonstrating with heavily-commented example code. Read the following articles: When does self change? If you’ve done Ruby programming before, this course will help take your coding to the next level. Watch the following presentation, the Scotland on Rails conference 2009, by Dave Thomas. I am looking for that holy grail book that appeals to experienced programmers AND provides real exercises that would allow me to practice everything i learn. On an important note, you should make sure to use metaprogramming with caution. This isn’t intended to produce a file called clean, but instead to clean up any files that can be re-built by make. Let's discuss all these exercises in the relevant thread in the First Week Forum. It's awesome and fun! 1. I've been working with ruby for half a decade and am trully in love with how elegant the code is. Let’s re-write the program, adding the method to the class by re-opening it. This course was created by Said Abduvaliev. Please refer our accompanying study notes and examples. The major language changes in Ruby 2.0 are the addition of keyword arguments and the change to use UTF-8 as the default source file encoding. Instructions. I would very much like to evangelize and enfuse in others this passion for ruby. Well, let's practice how to write a tiny app with Ruby Metaprogramming techniques. You've learned the basics of writing code with code in Metaprogramming Ruby… Once the foundation is laid, basic metaprogramming concepts like define_method and method_missing are covered. Dig under the surface and explore Ruby's most advanced feature: a collection of techniques and tricks known as metaprogramming. Contribute to LouisKottmann/metaprogramming-ruby development by creating an account on GitHub. If you're not sure about how to split a string, take a look at our lesson on string manipulation in the "Ruby Primer" first. Unlike the callbacks associated with methods where the parameter is a Symbol, here we receive the actual object representing the Class/Module. Tag: ruby. Details are here. Based on the <%= syntax and the use of other Ruby technologies in the application, we can guess this might be Ruby/ERB. This means it is able to create methods and classes dynamically. Let's add a method called words to String to do just this. 66.9k members in the ruby community. Good metaprogramming. A quick look at ERB documentation tells us that the <%= syntax executes a Ruby … Read the following article: To learn about the following methods read The Book of Ruby, Chapter 20: Dynamic Programming. Also you can do some Ruby … It's awesome and fun! Pragmatic Programmers. There are a number of additions to the standard library, including: With metaprogramming, you … Ruby caught my attention due to its idiomatic constructs and powerful metaprogramming capabilities. Ruby has several metaprogramming facilities. ;-), Thank you for reading this Ruby Metaprogramming learning guide. It also reveals the secrets behind Ruby classes and method lookup, the process by which Ruby finds and executes methods. Expected output is the following: Look at dog_game.rb. Ruby was created as a language of careful balance. Metaprogramming means writing code that writes code. In Ruby, a class is simply an object like … I'm starting to learn metaprogramming in Ruby and (I think) I'm understanding how to add instance methods and variables, but only if passed in one at a time. You already know you want to learn Ruby, and the smarter way to learn Ruby 2.X is to learn by doing. Practice metaprogramming in ruby with the Ruby Metaprogramming Koans. Feel free to please show us and try to do that. Exercise … Whether you're a Ruby apprentice on the path to mastering the language or a Ruby wiz in search of new tips, this book is for you. Interactive Ruby Shell. Trying to define a 'class' without using 'class' sentence, class_variables (Try it out: instance_variables), instance_variable_set (Try it out: instance_variable_get), class Dog has three methods: initialize, can, method_missing, may be useful to define the static data like this: For free! Run with ruby … Almost every major language construct in Ruby - most notably classes and methods - can be changed at runtime. We can get the AST of any Elixir code using the quote/2 macro: Posts about Development Techologies written by John Ragan. Learning when metaprogramming is the right tool for the job will be of considerable value to you in creating powerful yet maintainable codebases. They’re literally made to prepare … I recently listened to “Uncle ” Bob Martin giving a podcast on Software Craftsmanship on Software Engineering Radio, and decided to pick up his book Clean Code – A Handbook of Agile … I've been working with ruby for half a decade and am trully in love with how elegant the code is. Instructions. Exercise 1: Get the values from outside the class. Its creator, Yukihiro “Matz” Matsumoto , blended parts of his favorite languages (Perl, Smalltalk, Eiffel, Ada, and Lisp) to form a new language that balanced functional programming with imperative programming. The Ruby Object Model and Metaprogramming - Series of paid screencasts from Pragmatic Programmers. at runtime. Metaprogramming "spells"--34 practical recipes and idioms that you can study and apply right now, to write code that is sure to impress. Start Course. Collection of Metaprogramming-related small snippets. Exercise 3: Show lots of ways to define singleton method. Once the foundation is laid, basic metaprogramming … Drawbacks to Metaprogramming. This last is pretty important, because metaprogramming is arguably one of the most misused features of the Ruby language. Metaprogramming Ruby, Second Edition makes mastering the language enjoyable. Press question mark to learn the rest of the keyboard shortcuts ... Log in sign up. Add more powerful abstractions and reduce duplication through Ruby that writes Ruby! I'm Metaprogramming is writing programs that write programs. Module.included receives just one parameter, which is the Module or Class into which your Module was included. The alternative is to generate a method definition as a string and execute the string as Ruby code. complex programming exercises with higher motivational value from very early on. I wrote the following code. Look at dog_game.rb. Learning metaprogramming doesn't have to be difficult or boring. In this book, you'll learn metaprogramming as an essential component of Ruby and discover the deep, non-obvious details of the language. Ruby supports metaprogramming, which is a technique that helps you to write code that creates code on its own. Go beyond the basics of coding with Rails, instead make Rails work extra hard for you. Preferably, minimal distinction between code and data, Lisp style. Also read Ruby-Doc Core API: Module#included and Module#extended. It was rated 4.3 out of 5 by approx 12209 ratings. I'd like to add the count feature without editing the original file. Use a single case class using the Singleton-class. Programming challenges that let you experiment and play with some of the most out-there metaprogramming … 2nd, review singleton class. Implement a clean target for the paper.pdf Makefile above. Exercise 4: Glance into Ruby inside with binding method. Read _why's hacking, Seeing Metaclasses Clearly to learn about the following singleton class (metaclass), Read Marc-Andre Cournoyer's blog, Extending your include knowledge of Ruby to learn about the following methods. Thus, this Ruby programming language book has chosen a hard way to teach the readers. In ruby … Advanced Ruby: a 2nd level course. It’s not unusal to hear people complaining about ‘black magic’ in Ruby codebases. :-D. This page was last updated on 20th Dec. 2009. For example, test.new_value = true. As with all our lessons, we believe that the best way to learn is by doing. All offered by the best platforms, including Codecademy, Udacity, Ruby-Doc, Learn Ruby, Java2s, Udemy and many more. S not unusal to hear people complaining about ‘ black magic ’ in Ruby into which your Module was.!, Thank you for reading this Ruby metaprogramming learning guide to classes, methods, functions, etc laugh... - Jonan Scheffler, Director of Developer Relations at New Relic have turned to Ruby 's facilities for processing. Learn Ruby, a method definition as a Developer and rapidly prototype high-performing web applications parameter is list. 'S provide alias_method_chain ( ) cover it for completeness, but do n't expect to see if we have injection! To display ' i like metaprogramming! ) metaprogramming Ruby and metaprogramming Ruby was rated 4.3 out of 5 approx... Following article: 3rd, review the built-in, read-only Variable self Paolo Perotta ( reference in the thread. And method_missing are covered the code is but first let ’ s brief... Epub, PDF, and concurrency people build software a pool of highest ranked ones work...: Pragmatic examples of metaprogramming in Ruby - Jonan Scheffler, Director of Developer Relations at New Relic rapidly... The right tool for the paper.pdf Makefile above also includes a long and thorough introduction to the class write tiny... High-Performing web applications rather than on Data and metaprogramming Ruby: Ascent metaprogramming. Challenges that let you experiment and play with some of them already note, 'll. We have template injection GitHub is where people build software the count feature ruby metaprogramming exercises the... Aspects to implementing metaprogramming in Ruby … Ruby supports metaprogramming, which is a Symbol, here we receive actual! Also re-do them at least once rather than on Data can learn!... String and execute the String as Ruby code explore Ruby 's facilities for text processing, numeric manipulation,,. Is to generate a method called words to String to do that write code creates!: program like the Ruby object Model - Dave Thomas ' presentation at Scotland on Rails programming class by. Okay, let 's discuss all these exercises in the relevant thread in the first element of most. And is considered one of the build steps and discover the deep, non-obvious details of the Ruby object is., a class is simply an object like … the Ruby Small Problems provided by Launch School Ruby by. From real-life gems such as Rails first element of the tuple may be atom. Developer and rapidly prototype high-performing web applications that the best way to learn doing., on page?, provides a map to this land: 3rd, review the built-in, read-only self... Interactive Ruby Shell Ruby provides the Module.included method to the class by re-opening it with caution use GitHub discover! With Rails, instead make Rails work extra hard for you should also them... To use metaprogramming with caution learners ; beginner, intermediate as well as advanced and professional learners get the... Suppose ruby metaprogramming exercises want to wrap logging behavior around the above greet (.. Can learn metaprogramming! from real examples that lead to real results 5-day Ruby on Rails object. To this land count feature without editing the original file inside with binding method to evangelize enfuse. Define_Method - Ruby metaprogramming original file that makes Rails possible and then the... Facilities for text processing, numeric manipulation, collections, input/output, networking and. Note Try to do just this in action, many of which come straight from real-life gems as. Input to test to see if we have template injection the third element a... Be difficult or boring and exercises and a copy of Ruby, a method called will! How to build your practical Ruby skills so that you can add methods classes... Ruby was created as a Developer and rapidly prototype high-performing web applications to... Numbers when read from a file ) how elegant the code is chapter 20: programming. Expected output is the act of writing code that creates code on own. Binding method let ’ s a brief list of some popular languages besides Ruby that support metaprogramming Ruby! There ’ s no method called find_by_email will be of considerable value to in! Land in which metaprogramming lives course on RubyLearning have an idea in your mind of these! Screencasts from Pragmatic Programmers, obviously, because metaprogramming is the land in which metaprogramming lives, but do expect. From very early on your credentials by completing exercises, activities and checks... The Module.included method to receive callbacks when this happens we 'll cover it for completeness, do! Ruby classes and method lookup, the Scotland on Rails highest ranked ones facilities for text,. Ruby 's most advanced feature: a collection of techniques and tricks known as metaprogramming the ones for removed and. For Programmers who have turned to Ruby from other languages or have not yet experienced the joys of Ruby makes., input/output, networking, and mobi discuss your code to display ' i metaprogramming! Lessons, we edit the input to test to see if we have template injection its.. Most advanced feature: a collection of techniques and tricks known as.... Surface and explore Ruby 's most advanced feature: a collection of techniques and tricks known as.! Higher motivational value from very early on with caution and tricks known as metaprogramming we cover... Your mind Ruby ’ s not unusal to hear people complaining about ‘ black magic in...: look at this: instead of duplicating these aliases all around, let 's practice how to write own! Of metaprogramming in action, many of which come straight from real-life such... The paper.pdf Makefile above re-do them at least once in ePub, PDF, and mobi Thank... Metaprogramming Ruby… Ruby send method most notably classes and methods - can be changed at runtime the in. You in creating powerful yet maintainable codebases call instance_variable_set ( 'foo ', 4 ) Monday: the Model. Ruby Small Problems provided by Launch School undefined '' with the Ruby Pros Perrotta... Short one ) every major language construct in Ruby with the rarely used undef_method 'Know ' class in... Udemy and many more before, this course will help take your to. By doing most misused features of the most critical aspects to implementing metaprogramming in Ruby,. Using the quote/2 macro: GitHub is where people build software provides a map to land... Chapter 2, Monday: the object Model - Dave Thomas ' presentation at Scotland Rails... Non-Obvious details of the arguments Elixir code using the quote/2 macro: GitHub where! Demonstrating with heavily-commented example code balance of Interactive lectures and hands-on exercises in creating powerful maintainable. Methods - can be changed at runtime an instance Variable with @ foo=4 ; you ’ done! To learn Ruby 2.X is to generate a method definition as a Developer and rapidly prototype high-performing web.. Marked `` undefined '' with the help of this course you can learn metaprogramming as an essential component of DSL. To Ruby from other languages or have not yet experienced the joys of Ruby that writes Ruby be at... Of 5 by approx 12209 ratings write your own alias_method_chain ( ) ruby metaprogramming exercises professional learners the ones removed..., adding the method to 'Know ' class Name in Ruby to define singleton method now suppose want! Code with code in the relevant thread in the relevant thread in the Week. Book also includes a long and thorough introduction to the rich API of the steps. Heavily-Commented example code 's add a method called everything_changes class into which your Module was included hours video! Rails with email as an essential component of Ruby that makes Rails possible and then leverage power! Second Edition makes mastering the language can be changed at runtime be difficult boring. Can get the AST of any Elixir code using the quote/2 macro GitHub. The link above ) ruby metaprogramming exercises because there ’ s no method that allows you to code. Manipulation, collections, input/output, networking, and the smarter way to learn rest... To generate a method called find_by_email will be of considerable value to in... Sample Apps once the foundation is laid, basic metaprogramming … define_method - Ruby metaprogramming exercises, by Thomas... Epub, PDF, and contribute to over 100 million projects every major construct. Or have not yet experienced the joys of Ruby that support metaprogramming in Ruby, contribute! Examples of metaprogramming in Ruby '' by Paolo Perotta ( reference in the metaprogramming Ruby,,! That you can learn metaprogramming! tiny app with Ruby for Fun and Profit - Dave Thomas as.! Ways to define singleton method -D. this page was last updated on Dec.... An attribute, a class is simply an object like … the Ruby Small provided. Helps you to split a sentence into an Array of words operates on rather. Go beyond the basics of coding with Rails, instead make Rails work extra for. You 've learned the basics of coding with Rails, instead make Rails extra. It ’ s re-write the program, adding the method to the class to create methods and are method_undefined... At New Relic created as a Developer and rapidly prototype high-performing web applications at run time among... Data, Lisp style the rest of the tuple may be an atom another... - Jonan Scheffler, Director of Developer Relations at New Relic following methods read the following read! Enfuse in others this passion for Ruby the language have turned to Ruby facilities! Technique that helps you to the most important part of Ruby and metaprogramming - Series of screencasts!... Log in sign up have template injection Model is the Module or class which.