Lua is a programming language originally designed for extending applications, but also frequently used as a general-purpose, stand-alone language. It combines simple procedural syntax (similar to Pascal) with powerful data description constructs based on associative arrays and extensible semantics. It is dynamically typed, interpreted from bytecodes, and has automatic memory management, making it ideal for configuration, scripting, and rapid prototyping. It is implemented as a small library of C functions, written in ANSI C, and compiles unmodified in all known platforms. The implementation goals are simplicity, efficiency, portability, and low embedding cost. It has been used on games such as World of Warcraft, FarCry and Angry Birds, among others.
Cassandra is a scientific data viewer based on VTK. Cassandra provides dynamic interaction with the VTK pipeline and enables the user to load plug-ins dynamically in order to perform specific tasks in data manipulation and visualisation. Cassandra is open and modular, and can easily be extended to new filters through a set of dynamically loadable plug-ins. A plug-in template is provided to help users to develop and share their own plug-ins. This approach allows users to perform complex filtering without any specific knowledge of VTK or C++.
ALSA MIDI Kommander is a DCOP interface exposing many ALSA Sequencer features for shell scripts, Kommander scripts, or KDE programs requiring MIDI sequencer services. A few utilities are included, which can be used both as programming examples and as real work tools. The main program, "kaseq" is a single executable used as a DCOP service program. It runs as a daemon, allowing only a single running instance, and provides a system tray icon to give visual feedback for MIDI activity and a way to control the program's execution.
This software adds Octave support to SWIG. Octave code can use C/C++ functions, variables, constants and enums, classes (member variables, methods, single/multiple inheritance, etc), and templates. Argument/result translation is completely extensible via %typemap and other declarations in interface files. Octave operators map to C++ operators, methods, or global functions. Octave code can subclass C++ types and implement their virtual methods (i.e., C++ code transparently calls Octave code). There is some support for STL containers. There are many automated tests and examples.
Funky is a tiny, embeddable programming language with almost unlimited extending capabilities. It presents itself as a single class that contains the entire interpreter. Two versions of this class exist: Funky::Funky, a floating-point version, and Funky::Groovy, an integer version. You can install your own functions in the language as long as your functions take a vector of the built-in type of the interpreter and return an instance of that built-in type (or a vector of those). Funky is a functional programming language. As such, it treats everything as functions, and those functions handle only one type: double in the case of Funky::Funky, or int in the case of Funky::Groovy.