In programming languages, a delimited continuation, composable continuation or partial continuation, is a "slice" of a continuation frame that has been reified into a function. Unlike regular continuations, delimited continuations return a value, and thus may be reused and composed. Control delimiters, the basis of delimited continuations, were introduced by Matthias Felleisen in 1988[1] though early allusions to composable and delimited continuations can be found in Carolyn Talcott's Stanford 1984 dissertation, Felleisen et al.,[2] Felleisen's 1987 dissertation,[3] and algorithms for functional backtracking,
e.g., for pattern matching, for parsing, in the Algebraic Logic Functional programming language, and in the functional implementations of Prolog
where the failure continuation is often kept implicit and the reason of being for the success continuation is that it is composable.
^Felleisen, Matthias (1988). "The theory and practice of first-class prompts". Principles of Programming Languages. pp. 180–190. doi:10.1145/73560.73576. ISBN 0-89791-252-7. S2CID 16705769.
^Felleisen, Matthias (1987). The Calculi of Lambda-v-CS Conversion: A Syntactic Theory of Control and State in Imperative Higher-Order Programming Languages(PDF) (Thesis).
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