Em Dom, 2008-07-20 às 22:30 -0300, Rafael Gustavo da Cunha Pereira Pinto escreveu:
Hi folks,
Hello.
I am trying to make a program that reads a file which lines contain a series of 6 integers.
-------------sample.in------------- 01 02 03 04 05 06 10 11 15 18 29 45 19 22 10 01 23 14 -----------------------------------------
right now I am using hGetLine and getting a string. Is is possible to use read to convert this in a list of Num?
I don't know if it's the best option, but I'd do something as:
import Data.Char
getIntegers :: String -> [Int] getIntegers string | number == [] = [] | otherwise = read number : getIntegers rest where number :: String number = takeWhile isDigit string_ rest :: String rest = dropWhile isDigit string_ string_ :: String string_ = dropWhile (not . isDigit) string
Hope it helps. -- Marco Túlio Gontijo e Silva Página: http://marcotmarcot.googlepages.com/ Blog: http://marcotmarcot.blogspot.com/ Correio: marcot@riseup.net XMPP: marcot@jabber.org IRC: marcot@irc.freenode.net Telefone: 25151920 Celular: 98116720 Endereço: Rua Turfa, 639/701 Prado 30410-370 Belo Horizonte/MG Brasil