monad-time (empty) → 0.1

raw patch · 5 files changed

+80/−0 lines, 5 filesdep +basedep +mtldep +timesetup-changed

Dependencies added: base, mtl, time

Files

• LICENSE +30/−0
• Setup.hs +2/−0
• monad-time.cabal +22/−0
• src/Control/Monad/Time.hs +11/−0
• src/Control/Monad/Time/Instances.hs +15/−0

@@ -0,0 +1,30 @@+Copyright (c) 2015, Andrzej Rybczak++All rights reserved.++Redistribution and use in source and binary forms, with or without+modification, are permitted provided that the following conditions are met:++    * Redistributions of source code must retain the above copyright+      notice, this list of conditions and the following disclaimer.++    * Redistributions in binary form must reproduce the above+      copyright notice, this list of conditions and the following+      disclaimer in the documentation and/or other materials provided+      with the distribution.++    * Neither the name of Andrzej Rybczak nor the names of other+      contributors may be used to endorse or promote products derived+      from this software without specific prior written permission.++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain

@@ -0,0 +1,22 @@+name:                monad-time+version:             0.1+synopsis:            Type class for monads which carry the notion of the current time.+homepage:            https://github.com/scrive/monad-time+license:             BSD3+license-file:        LICENSE+author:              Andrzej Rybczak+maintainer:          andrzej@scrive.com+category:            Control+build-type:          Simple+cabal-version:       >=1.10++library+  exposed-modules:   Control.Monad.Time,+                     Control.Monad.Time.Instances++  build-depends:     base < 5,+                     mtl,+                     time++  hs-source-dirs:    src+  default-language:  Haskell2010

@@ -0,0 +1,11 @@+module Control.Monad.Time (MonadTime(..)) where++import Control.Monad.Trans+import Data.Time++-- | Class of monads which carry the notion of the current time.+class Monad m => MonadTime m where+  currentTime :: m UTCTime++instance MonadTime IO where+  currentTime = getCurrentTime

@@ -0,0 +1,15 @@+{-# LANGUAGE FlexibleContexts, FlexibleInstances, OverlappingInstances+  , UndecidableInstances #-}+module Control.Monad.Time.Instances () where++import Control.Monad.Trans++import Control.Monad.Time++-- | Generic, overlapping instance.+instance (+    MonadTime m+  , MonadTrans t+  , Monad (t m)+  ) => MonadTime (t m) where+    currentTime = lift currentTime