Videos tagged with JRuby

Summary Tom Enebo explains reasons for choosing JRuby: Hotspot optimizations, JVM Garbage Collectors, tools like profilers. Also: how JRuby helps to write cleaner, more expressive code with Java libraries. Bio Thomas Enebo has been a practitioner of Java for over a decade and he is the co-lead of the JRuby project. Thomas has also been happily using Ruby since 2001. In addition to working on JR...

Summary In this presentation, Charles Nutter discusses JRuby, invokedynamic, JRuby performance, Duby, the motivation behind creating Duby, Duby syntax, future plans for Duby, Surinx, the motivation behind creating Surinx, and how Duby and Surinx are helping JRuby. Bio Charles Oliver Nutter is a JRuby developer and JVM advocate, working to further language development on the Java platform. Charl...

Summary Thomas Enebo explains the basics of JRuby, showing what’s different from Java, how Java and JRuby interact with each other, and some examples demonstrating the usefulness of a complementary language. Bio Thomas Enebo has been a practitioner of Java for over a decade and he is the co-lead of the JRuby project. Thomas has also been happily using Ruby since 2001. In addition to working on ...

Google I/O 2009 - JRuby and Ioke on Google App Engine for JavaOla BiniJRuby is regarded as the most stable and efficient implementation of Ruby. Running JRuby on top of Google App Engine for Java gives access to many interesting possibilities, including running Rails on top of Google's infrastructure. Exactly how to make this happen is not totally apparent, though, and there are several gotchas...

Summary Martin Fowler talks about ThoughtWorks's experience with using Ruby on client projects for the past three years, and the creation of a Ruby-based product 'Mingle'. Bio Martin Fowler is an author, speaker, consultant and general loud-mouth on software development. He's the Chief Scientist at ThoughtWorks - an international application development company, and has written five books on so...

It has been said that Ruby is a slow language, but that is not true. Numerous Ruby projects have shown that it is possible to write fast, scalable software using Ruby. Merb, for instance, is faster than any major PHP web framework. In this talk, Carl will show how to take the many available tools, such as ruby-prof, RBench, and kcachegrind, and turn any old Ruby into a speed machine. The tips a...

Summary JRuby has gone from being an alternative to MRI, to being the preferred way of working with Ruby in many situations. The perfomance, usability and integration with the Java platform makes JRuby more than just an alternative. After this talk you will know: What JRuby is, and how it's implemented What performance optimizations JRuby uses Why you might want to use JRuby What people are usi...

The presentation will explain how to control Ruby applications using the Nintendo Wii game controllers. The Wii uses infrared cameras and acceleration detectors to send positional information over Bluetooth. Applications built with JRuby can use Java libraries for reading Wii controller data, allowing Rubyists to use the Wii to play games, make music, even help the physically challenged. The pr...

MRI, JRuby, Rubinius and other ruby implementations. What is an extension developer to do? One for each? Enter Foreign Function Invocation. Rubinius and JRuby ship with a version of libffi, and the ‘ffi’ rubygem for MRI. Now we, as extension developers, can write an extension once, and have it run on multiple ruby engines. We will look at differences between building a tradition MRI...

Summary The last few years have seen a large upsurge in the number of alternative languages running on the JVM. Until recently, Java was the only serious language that ran on the Java platform, but this is now quickly changing with languages like Scala, Nice, Pnuts and Groovy being designed for the JVM, and language ports like Kawa, Jython and JRuby gaining headway as fully featured alternative...