BSD-3-Clause licensed by Daniel YU
Maintained by [email protected]
This version can be pinned in stack with:menshen-0.0.2@sha256:ff57697dc0adb337c1f166031cb04651dd949b44d4950ce3459cf9480d65eb20,1395

Module documentation for 0.0.2

  • Data
    • Data.Menshen
Used by 2 packages in nightly-2019-03-23(full list with versions):

menshen

Hackage Build Status


{-# LANGUAGE RecordWildCards #-}
module Main where
import Data.Menshen
data Body = Body
  { name :: String
  , age  :: Int
  } deriving Show

verifyBody :: Validator Body
verifyBody = vcvt $ Body{..} -> Body
  <$> name ?: mark "name" . pattern "^[a-z]{3,6}$"
  <*> age  ?: mark "age"  . minInt 1 . maxInt 150

makeBody :: String -> Int -> Either String Body
makeBody name age = Body{..} ?: verifyBody

main = do
  print $ makeBody "daniel" 15