Purely functional is a term in computing used to describe algorithms, data structures or programming languages that exclude destructive modifications (updates). According to this restriction, variables are used in a mathematical sense, with identifiers referring to immutable, persistent values.
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Famous quotes containing the words purely and/or functional:
“It seems to me that your doctor [Tronchin] is more of a philosopher than a physician. As for me, I much prefer a doctor who is an optimist and who gives me remedies that will improve my health. Philosophical consolations are, after all, useless against real ailments. I know only two kinds of sickness—physical and moral: all the others are purely in the imagination.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)
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