Prelude.hs

--
-- MinIO Haskell SDK, (C) 2017 MinIO, Inc.
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
--     http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--

module Lib.Prelude
  ( module Exports,
    both,
    showBS,
    toStrictBS,
    fromStrictBS,
    lastMay,
  )
where

import Control.Monad.Trans.Maybe as Exports (MaybeT (..), runMaybeT)
import qualified Data.ByteString.Lazy as LB
import Data.Time as Exports
  ( UTCTime (..),
    diffUTCTime,
  )
import UnliftIO as Exports
  ( Handler,
    catch,
    catches,
    throwIO,
    try,
  )

-- | Apply a function on both elements of a pair
both :: (a -> b) -> (a, a) -> (b, b)
both f (a, b) = (f a, f b)

showBS :: (Show a) => a -> ByteString
showBS a = encodeUtf8 (show a :: Text)

toStrictBS :: LByteString -> ByteString
toStrictBS = LB.toStrict

fromStrictBS :: ByteString -> LByteString
fromStrictBS = LB.fromStrict

lastMay :: [a] -> Maybe a
lastMay a = last <$> nonEmpty a