Validate International Securities Identification Number: Difference between revisions

m
→‎{{header|Haskell}}: (Removed a redundant import)
(→‎{{header|Haskell}}: A more legibile Luhn test)
m (→‎{{header|Haskell}}: (Removed a redundant import))
Line 919:
 
Or, making alternative choices from standard libraries:
<lang haskell>import qualified Data.CharMap as (digitToInt)M
 
import qualified Data.Map as M
import Control.Monad (sequence, liftM2)
import Data.Maybe (fromMaybe)
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