Pixel wrote:
from http://pleac.sourceforge.net/pleac_haskell/numbers.html#AEN118 :
-- "read" handles both octal and hexadecimal when prefixed with 0x or 0o
-- here are versions adding the prefix and calling "read"
hex s = read ("0x" ++ s) :: Integer
oct s = read ("0o" ++ s) :: Integer
-- hex "45" == 69
-- oct "45" == 37
I want to remark that Integer does not necessarily use decimal
internally; rumour goes that it is binary. But whatever it is, "show"
turns that into decimal, e.g., show (hex "45") gives "69" indeed.
_______________________________________________
Haskell-Cafe mailing list
Haskell-Cafe@haskell.org
http://www.haskell.org/mailman/listinfo/haskell-cafe
