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Recursion patterns and time-analysis

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Resumo:This paper explores some ideas concerning the time-analysis of functional programs defined by instantiating typical recursion patterns such as folds, unfolds, and hylomorphisms. The concepts in this paper are illustrated through a rich set of examples in the Haskell programming language. We concentrate on unfolds and folds (also known as anamorphisms and catamorphisms respectively) of recursively defined types, as well as the more general hylomorphism pattern. For the latter, we use as case-studies two famous sorting algorithms, mergesort and quicksort. Even though time analysis is not compositional, we argue that splitting functions to expose the explicit construction of the recursion tree and its later consumption helps with this analysis.
Autores principais:Barbosa, Manuel
Outros Autores:Cunha, Alcino; Pinto, Jorge Sousa
Assunto:Functional programming Time analysis Recursion patterns
Ano:2005
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso aberto
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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