	Словари, Словарь Dictionary
	Словари, Словарь Dictionary Online computer dictionary - Свободный компьютерный английский словарь О сайте 10 самых Словари Обратная связь

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unfold/fold

unfold/fold A where a call to a function is ed to an instance of the function's body and then later an instance of the function's body is replaced by a call. E.g. sumdouble l = sum (double l) double l = case l of [] -> [] x:xs -> 2*x + double xs ==> (unfold double) sumdouble l = sum (case l of [] -> [] x:xs -> 2*x : double xs) ==> (distribute over case) sumdouble l = case l of [] -> sum [] x:xs -> sum (2*x : double xs) ==> (unfold sum) sumdouble l = case l of [] -> 0 x:xs -> 2*x + sum (double xs) ==> (fold sumdouble) sumdouble l = case l of [] -> 0 x:xs -> 2*x + sumdouble xs (1994-11-03)

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