A March 27, 2007 draft of a paper by Conal Elliot:
We present a user-friendly approach to unifying program creation and execution, based on a notion of “tangible values†(TVs), which are visual and interactive manifestations of pure values. Programming happens by gestural composition of TVs. Our goal is to give end-users the ability to create parameterized, composable content without imposing the usual abstract and linguistic working style of programmers. We hope that such a system will put the essence of programming into the hands of many more people, and in particular people with artistic/visual creative style.
In realizing this vision, we develop algebras for visual presentation and for “deep†function application, where function and argument may both be nested within a structure of tuples, functions, etc. Composition gestures are translated into chains of combinators that act simultaneously on statically typed values and their visualizations.
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