Web Reference: Know what is meant by composition of functions. The operation functional composition combines two functions to get a new function. If the domain and co-domains of f and g are ℝ, and f (x) = (x + 2) and g (y) = y 3 . Then. f is applied first and then g is applied to the result returned by f . Computer Science revision for OCR A-Level (H446): exam questions, flashcards, notes, past papers, and topic-by-topic practice. This topic covers the functional programming paradigm including function types, first-class objects, function application, partial application, composition, higher-order functions (map, filter, reduce/fold), and list processing operations.
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