- Table View
- List View
Ruby. Receptury
by Lucas Carlson Leonard RichardsonZbiór gotowych rozwišza? dla programistów u?ywajšcych j?zyka Ruby Jak przetwarza? pliki XML i HTML? Jak wykorzystywa? ?rodowisko Ruby on Rails? W jaki sposób ?šczy? Ruby z technologiš AJAX? Korzystasz w pracy z j?zyka Ruby i zastanawiasz si?, czy niektóre zadania programistyczne mo?na wykona? szybciej? Chcesz pozna? zasady programowania obiektowego w Ruby? A mo?e interesuje Ci? framework Ruby on Rails? J?zyk Ruby zdobywa coraz wi?kszš popularno??, jest wykorzystywany do tworzenia aplikacji sieciowych i sta? si? podstawš ?rodowiska Ruby on Rails. Jednak nawet najlepszy j?zyk programowania nie uwalnia programistów od ?mudnego realizowania zada?, które nie majš zbyt wiele wspólnego z tworzeniem aplikacji, czyli usuwania b??dów, implementowania typowych algorytmów, poszukiwania rozwišza? mniej lub bardziej typowych problemów i wielu innych. Ksiš?ka "Ruby. Receptury" znacznie przyspieszy Twojš prac?. Znajdziesz tu kilkaset praktycznych rozwišza? problemów wraz z przejrzystym komentarzem oraz tysišce wierszy proponowanego kodu, który b?dziesz móg? wykorzysta? w swoich projektach. Przeczytasz o strukturach danych, algorytmach, przetwarzaniu plików XML i HTML, tworzeniu interfejsów u?ytkownika dla aplikacji i po?šczeniach z bazami danych. Nauczysz si? generowa? i obrabia? pliki graficzne, korzysta? z us?ug sieciowych, wyszukiwa? i usuwa? b??dy w aplikacjach, a tak?e pisa? skrypty niezwykle pomocne w administrowaniu systemem operacyjnym Linux. Przetwarzanie danych tekstowych i liczbowych Operacje na tablicach Praca z systemem plików Programowanie obiektowe Przetwarzanie dokumentów XML i HTML oraz plików graficznych Generowanie plików PDF Po?šczenie z bazami danych Korzystanie z poczty elektronicznej, protoko?u telnet i po?šcze? Torrent Projektowanie aplikacji internetowych za pomocš Ruby on Rails Stosowanie us?ug sieciowych Optymalizacja aplikacji Tworzenie wersji dystrybucyjnych Automatyzacja zada? z wykorzystaniem j?zyka Rake Budowanie interfejsów u?ytkownika Je?li chcesz rozwišza? problem, skorzystaj z gotowej receptury -- ko?o ju? wynaleziono.
Ruby Recipes
by Malay MandalSolve your Ruby programming problems that occur during your day-to-day scripting work. This book contains a varied selection of practical and interesting code recipes designed to make your coding life easier. Ruby Recipes includes solutions to problems in working with data, handling exceptions, writing blocks, and using regular expressions. This book provides ready scripts for both simple complex scripting tasks, which you can use readily or with only minor modifications. These scripts cover areas such as collections, classes and structures, functional programming, and log handling. With these handy recipes at your fingertips, you will be able to solve those niggling problems and become even more efficient. What You Will Learn Install and run Ruby Read and write data Write functions Work with arrays, ranges, hashes, and iterators Handle dates and time Process XML as text Master OOP concepts such as classes, objects, subclassing, and inheritance Connect to databases Who This Book Is For Programmers new to Ruby, and web developers interested in knowing the foundations of the language.
Ruby Under a Microscope
by Pat Shaughnessy<p>Ruby is a powerful programming language with a focus on simplicity, but beneath its elegant syntax it performs countless unseen tasks. <p>Ruby Under a Microscope gives you a hands-on look at Ruby’s core, using extensive diagrams and thorough explanations to show you how Ruby is implemented (no C skills required). Author Pat Shaughnessy takes a scientific approach, laying out a series of experiments with Ruby code to take you behind the scenes of how programming languages work. <p>You’ll even find information on JRuby and Rubinius (two alternative implementations of Ruby), as well as in-depth explorations of Ruby’s garbage collection algorithm. <p>Ruby Under a Microscope will teach you:–How a few computer science concepts underpin Ruby’s complex implementation–How Ruby executes your code using a virtual machine–How classes and modules are the same inside Ruby–How Ruby employs algorithms originally developed for Lisp–How Ruby uses grammar rules to parse and understand your code–How your Ruby code is translated into a different language by a compilerNo programming language needs to be a black box. <p>Whether you’re already intrigued by language implementation or just want to dig deeper into Ruby, you’ll find Ruby Under a Microscope a fascinating way to become a better programmer. Covers Ruby 2.x, 1.9 and 1.8
The Ruby Way
by Hal FultonThe Ruby Way takes a "how-to" approach to Ruby programming with the bulk of the material consisting of more than 400 examples arranged by topic. Each example answers the question "How do I do this in Ruby?" Working along with the author, you are presented with the task description and a discussion of the technical constraints. This is followed by a step-by-step presentation of one good solution. Along the way, the author provides detailed commentary and explanations to aid your understanding.
Ruby Wizardry
by Eric WeinsteinThe Ruby programming language is perfect for beginners: easy to learn, powerful, and fun to use! But wouldn't it be more fun if you were learning with the help of some wizards and dragons?Ruby Wizardry is a playful, illustrated tale that will teach you how to program in Ruby by taking you on a fantastical journey. As you follow the adventures of young heroes Ruben and Scarlet, you’ll learn real programming skills, like how to:–Use fundamental concepts like variables, symbols, arrays, and strings–Work with Ruby hashes to create a programmable breakfast menu–Control program flow with loops and conditionals to help the Royal Plumber–Test your wild and crazy ideas in IRB and save your programs as scripts–Create a class of mini-wizards, each with their own superpower!–Organize and reuse your code with methods and lists–Write your own amazing interactive stories using RubyAlong the way, you’ll meet colorful characters from around the kingdom, like the hacker Queen, the Off-White Knight, and Wherefore the minstrel. Ruby Wizardry will have you (or your little wizard) hooked on programming in no time.For ages 10+ (and their parents!)
The Ruby Workshop: A Practical, No-Nonsense Introduction to Ruby Development
by Akshat Paul Peter Philips Daniel Szabo Cheyne WallaceCut through the noise and get real results with a step-by-step approach to learning Ruby programming. Key Features Ideal for the Ruby beginner who is getting started with Ruby for the first time 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 You already know you want to learn Ruby, and the smarter way to learn Ruby 2.X is to learn by doing. The Ruby Workshop focuses on building up your practical skills so that you can kick-start your career as a developer and rapidly prototype applications. You'll learn from real examples that lead to real results. Throughout The Ruby Workshop, you'll take an engaging step-by-step approach to understanding the Ruby language. You won't have to sit through any unnecessary theory. If you're short on time you can jump into a single exercise each day or spend an entire weekend learning about metaprogramming. It's your choice. Learning on your terms, you'll build up and reinforce key skills in a way that feels rewarding. Every physical copy of The Ruby Workshop unlocks access to the interactive edition. With videos detailing all exercises and activities, you'll always have a guided solution. You can also benchmark yourself against assessments, track progress, and receive content updates. You'll even earn a secure credential that you can share and verify online upon completion. It's a premium learning experience that's included with your printed copy. To redeem, follow the instructions located at the start of your Ruby book. Fast-paced and direct, The Ruby Workshop is the ideal companion for Ruby beginners. You'll build and iterate on your Ruby code like a software developer, learning along the way. This process means that you'll find that your new skills stick, embedded as best practice. A solid foundation for the years ahead. What you will learn Get to grips with the fundamentals of Ruby object-oriented programming Understand common Ruby patterns to help minimize and easily maintain code Explore ways to fetch, process, and output external data Discover ways to work with public APIs and create reusable RubyGems Keep your development process bug-free with various testing methods Explore how to host applications on cloud application platforms like Heroku Who this book is for Our goal at Packt is to help you be successful, in whatever it is you choose to do. The Ruby Workshop is an ideal Ruby tutorial for the Ruby beginner who is just getting started. Pick up a Workshop today, and let Packt help you develop skills that stick with you for life.
Ruby. Wprowadzenie
by Michael FitzgeraldPoznaj praktyczne zastosowania j?zyka Ruby Podstawowe konstrukcje j?zyka i zasady programowania obiektowego Operacje na tekstach, liczbach i plikach Framework Ruby on Rails Ruby -- obiektowy j?zyk programowania, wzgl?dnie nowy, bo opracowany na poczštku lat 90. ubieg?ego wieku, zdobywa coraz wi?kszš popularno??. W zakresie tworzenia aplikacji internetowych staje si? powa?nš konkurencjš dla Perla, PHP i Javy. Jest niezwykle elastyczny, posiada prostš sk?adni? i spore mo?liwo?ci, a tworzony w nim kod jest bardzo zwarty. Za pomocš Ruby mo?na pisa? zarówno proste skrypty administracyjne, jak i rozbudowane aplikacje internetowe. W budowaniu tych ostatnich niezwykle pomocny jest framework Ruby on Rails, dzi?ki któremu proces tworzenia aplikacji przebiega b?yskawicznie. Ksiš?ka "Ruby. Wprowadzenie" to podr?cznik dla tych, którzy chcš pozna? mo?liwo?ci j?zyka bez konieczno?ci studiowania zawi?ych opisów teoretycznych. Przedstawia Ruby na praktycznych przyk?adach, pokazujšc jego zastosowania w typowych zadaniach, z jakimi spotyka si? na co dzie? programista aplikacji sieciowych. Czytajšc t? ksiš?k?, poznasz elementy j?zyka Ruby i nauczysz si? programowa? obiektowo. Dowiesz si?, w jaki sposób przetwarza? dane liczbowe, teksty i tablice, pliki i katalogi oraz dokumenty XML. Przeczytasz tak?e o ?rodowisku Ruby on Rails. Instalacja j?zyka Ruby w ró?nych systemach operacyjnych Instrukcje i operatory Przetwarzanie tekstów i operacje matematyczne Operacje na systemie plików Korzystanie z plików XML Programowanie obiektowe Wprowadzenie do Ruby on Raili Wejd? do ?wiata Ruby, a pokochasz jego mo?liwo?ci!
RubyMotion iOS Develoment Essentials
by Abhishek Nalwaya Akshat PaulThis is a step-by-step book that builds on your knowledge by adding to an example app over the course of each chapter. Each topic uses example code that can be compiled and tested to show how things work practically instead of just telling you the theory. Complicated tasks are broken down into easy to follow steps with clear explanations of what each line of code is doing.Whether you are a novice to iOS development or looking for a simpler alternative to Objective-C; with RubyMotion iOS Development Essentials, you will become a pro at writing great iOS apps
Ruidos en la web: Cómo se informan los adolescentes en la era digital
by Roxana MorduchowiczEste es un libro sobre los adolescentes. También sobre las tecnologías. Y sobre ciudadanía y política. Desde estos cuatro ejes y analiza las serias dificultades que tienen los jóvenes para buscar, procesar, seleccionar, evaluar y utilizar el enorme caudal de información que circula hoy en internet. Adolescencia, tecnología, educación y cultura ciudadana: sobre estos cuatro ejes se asienta Ruidos en la web para explorar un interrogante crucial: cómo se informan los jóvenes en un universo de saberes sin límites. La pregunta es asediada a partir de múltiples enfoques: desde la forma en que los chicos utilizan internet para las tareas escolares, los nuevos hábitos propios de esta era tecnológica, su impacto en el espacio doméstico, el cambio en el concepto de autoridad cuando se trata de acudir a una fuente de información, la dificultad para distinguir entre contenidos falsos y genuinos. Y de esta problemática se desprende la preocupación por el modo en que se está formando la futura dirigencia y sus consecuencias sobre la democracia. Con un estilo ameno que no va en desmedro del rigor académico, Roxana Morduchowicz, especialista en cultura juvenil y en la relación de los chicos con las pantallas e internet, brinda un panorama de la situación, desmitifica postulados poco consistentes, se resiste a los clichés y pone en agenda un tema de interés universal.
Ruination – um livro LEAGUE OF LEGENDS
by Anthony ReynoldsEis o primeiro livro oficial ambientado no universo League of Legends. Um conto épico de magia, de vingança e de um império à beira da ruína. Quando o tio de Kalista, o jovem e narcisista Viego, se torna rei, ela promete moderar os seus instintos destrutivos, tornando-se sua leal confidente, conselheira e general militar. No entanto, Kalista vê os seus desígnios gorados quando a lâmina envenenada de um assassino atinge a esposa de Viego, Isolde, contagiando-a com uma doença incurável. À medida que o estado de Isolde piora, Viego desce à loucura e à dor, ameaçando arrastar Camavor consigo. É então que Kalista tenta uma jogada desesperada para salvar o reino, lançando-se em busca das lendárias Ilhas Abençoadas. Elas poderão ser a chave para a salvação da rainha — isto é, se Kalista conseguir encontrá-las. A corrupção cresce na capital das Ilhas Abençoadas, onde um guardião vingativo procura enredar Kalista nas suas cruéis intrigas. Ela será forçada a escolher entre a sua lealdade a Viego e fazer o que ela sabe que é certo... Porque, mesmo perante a escuridão absoluta, um gesto nobre pode fazer brilhar a luz que salvará o mundo. UM LIVRO LEAGUE OF LEGENDS
Rule Based Systems for Big Data
by Han Liu Alexander Gegov Mihaela CoceaThe ideas introduced in this book explore the relationships among rule based systems, machine learning and big data. Rule based systems are seen as a special type of expert systems, which can be built by using expert knowledge or learning from real data. The book focuses on the development and evaluation of rule based systems in terms of accuracy, efficiency and interpretability. In particular, a unified framework for building rule based systems, which consists of the operations of rule generation, rule simplification and rule representation, is presented. Each of these operations is detailed using specific methods or techniques. In addition, this book also presents some ensemble learning frameworks for building ensemble rule based systems.
Rule of the Robots: How Artificial Intelligence Will Transform Everything
by Martin FordThe New York Times–bestselling author of Rise of the Robots shows what happens as AI takes over our lives If you have a smartphone, you have AI in your pocket. AI is impossible to avoid online. And it has already changed everything from how doctors diagnose disease to how you interact with friends or read the news. But in Rule of the Robots, Martin Ford argues that the true revolution is yet to come. In this sequel to his prescient New York Times bestseller Rise of the Robots, Ford presents us with a striking vision of the very near future. He argues that AI is a uniquely powerful technology that is altering every dimension of human life, often for the better. For example, advanced science is being done by machines, solving devilish problems in molecular biology that humans could not, and AI can help us fight climate change or the next pandemic. It also has a capacity for profound harm. Deep fakes—AI-generated audio or video of events that never happened—are poised to cause havoc throughout society. AI empowers authoritarian regimes like China with unprecedented mechanisms for social control. And AI can be deeply biased, learning bigoted attitudes from us and perpetuating them. In short, this is not a technology to simply embrace, or let others worry about. The machines are coming, and they won&’t stop, and each of us needs to know what that means if we are to thrive in the twenty-first century. And Rule of the Robots is the essential guide to all of it: both AI and the future of our economy, our politics, our lives.
Rule of the Robots: How Artificial Intelligence Will Transform Everything
by Martin FordIn this sequel to his prescient New York Times bestseller Rise of the Robots, Martin Ford presents us with a striking vision of the very near future. He argues that AI is a uniquely powerful technology, a kind of "electricity of intelligence" that is altering every dimension of human life, often for the better with advanced science being done by machines who can solve problems humans can not. AI has the potential to help us fight climate change or the next pandemic, but it also has a capacity for profound harm. Deep fakes-AI-generated audio or video of events that never happened-are poised to cause havoc throughout society. AI empowers authoritarian regimes like China with unprecedented mechanisms for social control. And AI can be deeply biased, learning bigoted attitudes from the data used to train algorithms and perpetuating them. Hard-hitting and thought-provoking, covering everything from self-driving cars to the history of deep learning to apps for diagnosing skin cancer, Rule of the Robots challenges our fears and preconceptions about artificial intelligence. Ford argues that AI is here to stay and the real question is not how to stop it, but how to control its negative potential and harness its power for good as AI transforms our economy, our politics, and our lives.
Rule of the Robots: How Artificial Intelligence Will Transform Everything
by Martin FordIn this sequel to his prescient New York Times bestseller Rise of the Robots, Martin Ford presents us with a striking vision of the very near future. He argues that AI is a uniquely powerful technology, a kind of "electricity of intelligence" that is altering every dimension of human life, often for the better with advanced science being done by machines who can solve problems humans can not. AI has the potential to help us fight climate change or the next pandemic, but it also has a capacity for profound harm. Deep fakes-AI-generated audio or video of events that never happened-are poised to cause havoc throughout society. AI empowers authoritarian regimes like China with unprecedented mechanisms for social control. And AI can be deeply biased, learning bigoted attitudes from the data used to train algorithms and perpetuating them. Hard-hitting and thought-provoking, covering everything from self-driving cars to the history of deep learning to apps for diagnosing skin cancer, Rule of the Robots challenges our fears and preconceptions about artificial intelligence. Ford argues that AI is here to stay and the real question is not how to stop it, but how to control its negative potential and harness its power for good as AI transforms our economy, our politics, and our lives.(P) 2021 Hachette Audio
The Rule of Thoughts (The Mortality Doctrine #2)
by James DashnerFrom James Dashner, the #1 New York Times bestselling author of the Maze Runner series comes The Rule of Thoughts, the exciting sequel to The Eye of Minds. Michael completed the Path. What he found at the end turned everything he'd ever known about his life--and the world--completely upside down. He barely survived. But it was the only way VirtNet Security knew to find the cyber-terrorist Kaine--and to make the Sleep safe for gamers once again. And, the truth Michael discovered about Kaine is more complex than they anticipated, and more terrifying than even the worst of their fears. Kaine is a tangent, a computer program that has become sentient. And Michael's completing the Path was the first stage in turning Kaine's master plan, the Mortality Doctrine, into a reality. The Mortality Doctrine will populate Earth entirely with human bodies harboring tangent minds. Any gamer who sinks into the VirtNet risks coming out with a tangent intelligence in control of their body. And the takeover has already begun.
The Rule of Three
by Eric WaltersOne shocking afternoon, computers around the globe shut down in a viral catastrophe. At sixteen-year-old Adam Daley's high school, the problem first seems to be a typical electrical outage, until students discover that cell phones are down, municipal utilities are failing, and a few computer-free cars like Adam's are the only vehicles that function. Driving home, Adam encounters a storm tide of anger and fear as the region becomes paralyzed. Soon--as resources dwindle, crises mount, and chaos descends--he will see his suburban neighborhood band together for protection. And Adam will understand that having a police captain for a mother and a retired government spy living next door are not just the facts of his life but the keys to his survival, in The Rule of Three by Eric Walters.
Rule of Thumb: A Guide To Small Business Marketing (Rule of Thumb #2)
by David CatalanIn clear and practical language, David Catalan describes essential, need-to-know marketing concepts along with implementation strategies proven to be successful. Readers will learn: 1) The 5 important Ps of marketing; 2) How to conduct market research; 3) What branding is and brand positioning basics; 4) How to create a marketing plan; 5) How to successfully market online; 6) and more!
Rule of Thumb: A Small Business Guide To Software Technology (Rule of Thumb #9)
by Michael Mitilier Melissa TurnerBecoming the leader of a successful company requires not only good business sense, but also the knowledge to effectively use a multitude of software technologies to communicate effectively with clients. However, when it comes to putting business software to good use, many individuals find themselves navigating the vast expanse of technology alone, wasting valuable time and money through trial and error. "Rule of Thumb: A Guide to Small Business Software Technology" provides useful tips and guidelines to get you on the fast-track to creating professional-looking documents with the Microsoft Office Suite and PDF technology. This easy to follow book includes step-by-step instructions and time-saving shortcuts. it's a must-have reference guide for all small business owners and those looking to improve their knowledge of these essential business tools.
Rule Technologies. Research, Tools, and Applications
by Jose Julio Alferes Leopoldo Bertossi Guido Governatori Paul Fodor Dumitru RomanThis book constitutes the refereed proceedings of the 10th International RuleML Symposium, RuleML 2016, held in New York, NY, USA during July 2016. The 19 full papers, 1 short paper, 2 keynote abstracts, 2 invited tutorial papers, 1 invited standard paper, presented were carefully reviewed and selected from 36 submissions. RuleML is a leading conference aiming to build bridges between academia and industry in the field of rules and its applications, especially as part of the semantic technology stack. It is devoted to rule-based programming and rule-based systems including production rule systems, logic programming rule engines, and business rule engines and business rule management systems, Semantic Web rule languages and rule standards and technologies, and research on inference rules, transformation rules, decision rules, and ECA rules.
Rules and Reasoning: Second International Joint Conference, RuleML+RR 2018, Luxembourg, Luxembourg, September 18–21, 2018, Proceedings (Lecture Notes in Computer Science #11092)
by Christoph Benzmüller Francesco Ricca Xavier Parent Dumitru RomanThis book constitutes the proceedings of the International Joint Conference on Rules and Reasoning, RuleML+RR 2018, held in Luxembourg during September 2018. This is the second conference of a new series, joining the efforts of two existing conference series, namely “RuleML” (International Web Rule Symposium) and “RR” (Web Reasoning and Rule Systems).The 10 full research papers presented together with 5 long technical communications and 7 short papers were carefully reviewed and selected from 33 submissions.
Rules and Reasoning: 7th International Joint Conference, RuleML+RR 2023, Oslo, Norway, September 18–20, 2023, Proceedings (Lecture Notes in Computer Science #14244)
by Anna Fensel Ana Ozaki Dumitru Roman Ahmet SoyluThis book constitutes the refereed proceedings of the 7th International Joint Conference on Rules and Reasoning, RuleML+RR 2023, held in Oslo, Norway, during September 18–20, 2023. The 13 full papers and 3 short papers included in these proceedings were carefully reviewed and selected from 46 submissions. They focus on all aspects of theoretical advances; novel technologies; innovative applications; knowledge representation; reasoning with rules; and research, development, applications of rule-based systems.
Rules and Reasoning: Third International Joint Conference, RuleML+RR 2019, Bolzano, Italy, September 16–19, 2019, Proceedings (Lecture Notes in Computer Science #11784)
by Paul Fodor Marco Montali Diego Calvanese Dumitru RomanThis book constitutes the proceedings of the International Joint Conference on Rules and Reasoning, RuleML+RR 2019, held in Bolzano, Italy, during September 2019. This is the third conference of a new series, joining the efforts of two existing conference series, namely “RuleML” (International Web Rule Symposium) and “RR” (Web Reasoning and Rule Systems). The 10 full research papers presented together with 5 short technical communications papers were carefully reviewed and selected from 26 submissions.
Rules and Reasoning: 6th International Joint Conference on Rules and Reasoning, RuleML+RR 2022, Berlin, Germany, September 26–28, 2022, Proceedings (Lecture Notes in Computer Science #13752)
by Guido Governatori Anni-Yasmin TurhanThis book constitutes the proceedings of the International Joint Conference on Rules and Reasoning, RuleML+RR 2022, held in Berlin, Germany, during September 26–28, 2022. This is the 6th conference of a new series, joining the efforts of two existing conference series, namely “RuleML” (International Web Rule Symposium) and “RR” (Web Reasoning and Rule Systems). The 18 full research papers presented in this book were carefully reviewed and selected from 54 submissions. The papers cover the following topics: answer set programming; foundations of nonmonotonic reasoning; datalog; queries over ontologies; proofs, error-tolerance, and rules; as well as agents and argumentation.
Rules and Reasoning: 4th International Joint Conference, RuleML+RR 2020, Oslo, Norway, June 29 – July 1, 2020, Proceedings (Lecture Notes in Computer Science #12173)
by Víctor Gutiérrez-Basulto Tomáš Kliegr Ahmet Soylu Martin Giese Dumitru RomanThis book constitutes the proceedings of the International Joint Conference on Rules and Reasoning, RuleML+RR 2020, held in Oslo, Norway, during June-July 2020*. This is the 4th conference of a new series, joining the efforts of two existing conference series, namely “RuleML” (International Web Rule Symposium) and “RR” (Web Reasoning and Rule Systems).The 7 full research papers presented together with 6 short technical communications papers were carefully reviewed and selected from 30 submissions.*The conference was held virtually due to the COVID-19 pandemic.
Rules and Reasoning: 5th International Joint Conference, RuleML+RR 2021, Leuven, Belgium, September 13–15, 2021, Proceedings (Lecture Notes in Computer Science #12851)
by Sotiris Moschoyiannis Rafael Peñaloza Jan Vanthienen Ahmet Soylu Dumitru RomanThis book constitutes the proceedings of the International Joint Conference on Rules and Reasoning, RuleML+RR 2021, held in Leuven, Belgium, during September, 2021. This is the 5th conference of a new series, joining the efforts of two existing conference series, namely “RuleML” (International Web Rule Symposium) and “RR” (Web Reasoning and Rule Systems). The 17 full research papers presented together with 2 short technical communications papers and 2 abstracts of invited papers were carefully reviewed and selected from 39 submissions.