Definition & Meaning | English word COMBINATOR

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Definitions of COMBINATOR

1. (computer science) A lambda expression which has no free variables in it.

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Examples of Using COMBINATOR in a Sentence

• A combinator is a higher-order function that uses only function application and earlier defined combinators to define a result from its arguments.
• The heart of Curry's paradox is that untyped lambda calculus is unsound as a deductive system, and the Y combinator demonstrates this by allowing an anonymous expression to represent zero, or even many values.
• Using again just the syntactic transformations available in this formalism, one can obtain so-called fixed-point combinators (the best-known of which is the Y combinator); these, by definition, have the property that f(Y(f)) = Y(f) for all functions f.
• In recent decades, the SKI combinator calculus, with only two primitive combinators, K and S, has become the canonical approach to combinatory logic.
• His system was essentially equivalent to a combinatory logic based upon the combinators B, C, I, K, S and a combinator for a universally quantified nand function which he called U.
• Other important language features such as tuple classes, combinator inlining, macros, user-defined parsing words and the modern vocabulary system were only added in a piecemeal fashion as their utility became clear.
• He is best known for designing and implementing three programming languages, including the first for functional programming based on lazy evaluation, combinator graph reduction, and polymorphic types: SASL (1972), Kent Recursive Calculator (KRC) (1981), and the commercially supported Miranda (1985).
• A combinator library is a software library which implements combinatory logic as combinators, for a functional programming language: "the key idea is this: a combinator library offers functions (the combinators) that combine functions together to make bigger functions".
• Combinatory logic builds on combinators, higher order functions whose domain is another combinator or function, and whose range is yet another combinator.
• Other Haskell parser combinator libraries that have been derived from Parsec include Megaparsec and Attoparsec.
• Ouroboros BFT was an interim version used in 2020 to enable the switch between the Classic and Praos versions of Cardano using a hard fork combinator that preserved the blockchain history;.

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