map

1. <mathematics> function.

2. <programming> In functional programming, the most common higher-order function over lists. Map applies its first argument to each element of its second argument (a list) and returns the list of results.

	map :: (a -> b) -> [a] -> [b]
	map f []     = []
	map f (x:xs) = f x : map f xs

(1997-11-05)

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