Riku Salminen rikusalminen
rikusalminen
/ fold_excersizes.hs
Created
October 20, 2011 09:03
— forked from pimeys/fold_excersizes.hs
strToInt and StrToDouble
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| import Data.Char | |
| strToInt :: String -> Int | |
| strToInt ('+':xs) = strToInt xs | |
| strToInt ('-':xs) = - strToInt xs | |
| strToInt xs = | |
| foldl step 0 xs | |
| where | |
| step acc x = acc * 10 + (digitToInt x) | |
| strToInt _ = undefined |