Impromptu (programming environment): Difference between revisions

Revision as of 07:40, 23 August 2011

Revision as of 00:37, 8 November 2011

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== Description ==

The environment allows to make changes to a program at [[runtime]], so variables and functions may be redifinedredefined and the changes take effect immediately. A programmer can also create and schedule code for future execution, as well as data events such as notes and graphics objects. Once an event is scheduled, execution continues. Looping is performed by using an idiom called "temporal recursion" which works by having a function asynchronously schedule a future call to itself as its final action.

The library allows communicating with [[Audio Units]] for audio synthesis, and with graphics layers such as [[QuickTime]], [[Quartz (graphics layer)|Quartz]], [[Core Image]], [[OpenGL]] for [[video composition]]. Code written in [[Objective-C]] can be called from the editor, and also Objective-C frameworks can perform calls to the Scheme interpreter.