When Java first shipped, Bill Joy and James Gosling and the other members of the Java team thought that Java should have generics, only they didn't have the time to do a good job designing it in. So because there would be no generics in Java, at least initially, they felt that arrays had to be covariant.

Martin Odersky talks with Frank Sommers and Bill Venners about the compromises and most important goals in Scala's design, its object-oriented innovations, and what's in it for you.

Record Filter gives you the full power of ActiveRecord's query building tools with a heaping helping of DSL thrown in to save your Ruby-loving fingers from writing nasty SQL.

The Echo Nest Remix API (“Remix,” for short) is an open-source programming framework written in Python. It provides numerous classes and methods to deal with recorded songs, analyze them, inspect and manipulate the resulting analyses, and manipulate audio based on that information.

Sass is a meta-language on top of CSS that‘s used to describe the style of a document cleanly and structurally, with more power than flat CSS allows. Sass both provides a simpler, more elegant syntax for CSS and implements various features that are useful for creating manageable stylesheets.

As3 Crypto is a cryptography library written in Actionscript 3 that provides several common algorithms. This version also introduces a TLS engine (TLS is commonly known as SSL.)

Best code comment ever.

BDD/Cucumber talk by Ben Mabey.

Porter is essentially the inverse of X-SendFile. It parses the multipart post in C inside your apache process and writes the files to disk. Once that work is done it changes the request to look like a regular form POST which contains pointers to the temp files on disk.

This gem allows you to access the content of

In earlier version I needed to do an awkward thing that only affected development mode, where Rails unloads all classes after each request. run_later runs code in a separate thread, and depending on how long that code runs the classes would be unloaded when they're still accessed from the worker.

Finish the remainder of the ActiveModel todo list (observers, callbacks, validations, scoping, and serialization) in addition to associations. Also wire up ActiveModel up to ActiveRecord and ActiveResource.

Hanna is an RDoc template that scales. It's implemented in Haml, making the sources clean and readable. It's built with simplicity, beauty and ease of browsing in mind.

This is a project to make a complete replacement for the default HTML generator for Rdoc, the API documentation-extraction system for Ruby.

Just because you are capable of building a bikeshed does not mean you should stop others from building one just because you do not like the color they plan to paint it.

So, as a result, people using RESTful ideas to talk to browsers have to put the smarts back on the server. They invent new URLs which (for example) return a resource, but return it all wrapped up in the HTML needed to display it as a form for browser-based editing.

The number of operators that you can overload is very small and each of them is attached to very specific semantics that makes little sense outside the realm of scalars and of a few other specialized mathematical concepts (e.g. matrices).