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Questions - maplist

Haskell list has is showing number and empty string when mapping

I am reading a file, this file contains hexadecimal bytes. I read this into a string, I map them into single words and then I turn them into their decimal values. main = do args <- getArgs cont...
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Kastor438

list

haskell

hex

readfile

maplist

Votes: 0

Answers: 2

Latest Answer

readHex has the type readHex :: (Eq a, Num a) => ReadS a which in turn is (see here) type ReadS a = String -> [(a, String)] So readHex in your example seems to do exactly what it promises to...
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flawr

Prolog maplist on inner term?

How to use maplist on inner term? Assuming the KB is: gate(not(o), i). gate(not(i), o). gate(and(o, i), o). gate(and(i, o), o). gate(and(B, B), B). bits([i,o,o,i,i]). The following is not working:...
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Mustafa

list

prolog

functor

maplist

Votes: 0

Answers: 1

Latest Answer

With a helper predicate: not(A, Z) :- gate(not(A), Z). ?- bits(BITS), maplist(not, BITS, ANS). ANS = [o, i, i, o, o], BITS = [i, o, o, i, i] But if you are going to add two lines of helper, sk...
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TessellatingHeckler

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