The gulcii package

[Tags: gpl, program]

GULCII is an untyped lambda calculus interpreter supporting interactive modification of a running program with graphical display of graph reduction.

There are three variants of lambda abstraction: lazy, strict, and copy:

> x . f x x -- x is evaluated lazily with sharing > x ! f x x -- x is evaluated strictly and shared > x ? f x x -- x is copied before any evaluation

There is additional syntax sugar for natural numbers and lists, using http://en.wikipedia.org/wiki/Mogensen%E2%80%93Scott_encoding#Scott_encoding:

> [0,1,2,3]

There is a small standard library based loosely around the Haskell Prelude, with additions geared towards MIDI generation for live-coding music, implemented using a mechanism similar to Debug.Trace.trace:

> x y . { print : x } y

Quick start:

 gulcii
 :load mars.gu
 main
 :quit

If you have Pure-data and Timidity, try:

 timidity -iA -Oj &
 pd -alsamidi ~/.cabal/share/gulcii-0.2.0.1/extra/fudi2midi.pd &
 gulcii | pdsend 8765

See also: live-sequencer which has many more features (but no sharing during evaluation).


Properties

Version0.2.0.1
Dependenciesbase (>=3 && <6), cairo (>=0.11 && <0.13), containers (>=0.3 && <0.6), filepath (>=1.1 && <1.4), gtk (>=0.11 && <0.13)
LicenseGPL-2
AuthorClaude Heiland-Allen
Maintainerclaude@mathr.co.uk
CategorySound, Music, GUI
Home pagehttp://gitorious.org/maximus/gulcii
Source repositoryhead: git clone git://gitorious.org/maximus/gulcii.git
this: git clone git://gitorious.org/maximus/gulcii.git(tag 0.2.0.1)
Executablesgulcii
Upload dateSat May 18 20:42:54 UTC 2013
Uploaded byClaudeHeilandAllen
Downloads120 total (14 in last 30 days)

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