Esto le interesará a los amantes de Scala y Python ;)
-------- Original Message -------- Subject: [IPython-dev] IScala: a Scala-language backend for IPython Date: Sun, 8 Sep 2013 21:54:14 +0200 From: Mateusz Paprocki <matt...@gmail.com> Reply-To: IPython developers list <ipython-...@scipy.org> To: IPython developers list <ipython-...@scipy.org> Hi, I would like to announce IScala: a Scala-language backend for IPython, see [1]. Scala is general purpose, object-functional, statically typed programming language for JVM. IScala is an early work in progress, but it's already fairly usable. All three types of frontends are supported. Required dependencies are IPython 1.0+ and Java Runtime Environment 1.6+. See README.md for installation and usage details. Motivation for this project came when I saw IJulia announcement. The hard part - actually "interpreting" Scala - was done in Scala REPL by Scala developers. Scala is a compiled language, so interpreting it means that source code is compiled (with some fancy wrappers), resulting class files loaded into JVM and code run via Java reflection. Interpreted code behaves exactly the same as compiled code and it runs at full speed. There are a few issues with this, however. Scala is a pure object-oriented language, so at top level you can put only packages, traits, classes and singleton objects. No expressions and other types of statements are allowed. Interpreter removes this restriction, by wrapping source code in singleton objects, so that you can simply write e.g. `val x = 1` to define a value, which is otherwise illegal. During development of IScala I also created a set of notebooks with Scala code, see [2]. Those are based on a subset of Twitter's Scala lessons [3]. I didn't encode notebooks directly in the JSON-based format, but I invented an adhoc format based on Markdown with support for cells. There is a simple converter that allows to generate IPython-compatible notebooks. [1] https://github.com/mattpap/IScala [2] https://github.com/mattpap/scala_school_notebooks [3] https://github.com/twitter/scala_school Mateusz _______________________________________________ IPython-dev mailing list ipython-...@scipy.org http://mail.scipy.org/mailman/listinfo/ipython-dev
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