Deprecated

menshen

Data Validation

https://github.com/leptonyu/menshen#readme

LTS Haskell 14.27:0.0.3@rev:1
Stackage Nightly 2019-09-21:0.0.3@rev:1
Latest on Hackage:0.0.3@rev:1

See all snapshots menshen appears in

BSD-3-Clause licensed by Daniel YU
Maintained by [email protected]
This version can be pinned in stack with:menshen-0.0.3@sha256:886899140d49ee64cd66fe8f696509f78034159a76af98db29745d503020b243,1415

Module documentation for 0.0.3

menshen

Hackage stackage LTS package stackage Nightly package 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