lucid


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lucid

Psychiatry of or relating to a period of normality between periods of insane or irresponsible behaviour

LUCID

(1)
Early query language, ca. 1965, System Development Corp, Santa Monica, CA. [Sammet 1969, p.701].

LUCID

(2)
A family of dataflow languages descended from ISWIM, lazy but first-order.

Ashcroft & Wadge <wwadge@csr.uvic.ca>, 1981.

They use a dynamic demand driven model. Statements are regarded as equations defining a network of processors and communication lines, through which the data flows. Every data object is thought of as an infinite stream of simple values, every function as a filter. Lucid has no data constructors such as arrays or records. Iteration is simulated with 'is current' and 'fby' (concatenation of sequences). Higher-order functions are implemented using pure dataflow and no closures or heaps.

["Lucid: The Dataflow Language" by Bill Wadge <wwadge@csr.UVic.CA> and Ed Ashcroft, c. 1985]. ["Lucid, the Dataflow Programming Language", W. Wadge, Academic Press 1985].
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