Sorry, msb rigthmost > Here's another approach for Bool lists with msb leftmost: > > bitsToInt :: [Bool] -> Integer > bitsToInt = foldr((.(flip shiftL 1)).(+)) 0. map (fromIntegral.fromEnum) > > > > Hallo paul.brau...@loria.fr, je schreef op 30-09-09 11:18: > >> Hello, >> >> I haven't found a function in hackage or in the standard library that >> takes a list of booleans (or a list of 0s and 1s, or a tuple of booleans >> or 0s and 1s) and outputs a Word8 or Word32. >> >> I have written one which seems very inefficient : >> >> toWord8 :: [Bool] -> Word8 >> toWord8 bs = go 0 0 bs >> where go n r [] = r >> go n r (b:bs) = go (n+1) (if b then setBit r n else clearBit r n) bs >> >> Is there a better way to do this out there ? >> >> (If it helps, i'm writting a toy compression algorithm, which outputs >> binary as lists of booleans, and I'd like to output that in a file). >> >> Cheers >> Paul >> _______________________________________________ >> Haskell-Cafe mailing list >> Haskell-Cafe@haskell.org >> http://www.haskell.org/mailman/listinfo/haskell-cafe >> >> > >
-- Met vriendelijke groet, =@@i
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