folds 0.7.1 → 0.7.2
raw patch · 6 files changed
+221/−131 lines, 6 filessetup-changednew-uploaderPVP: major bump suggested
API removals or changes: PVP suggests a major version bump
API changes (from Hackage documentation)
- Data.Fold.Internal: instance (Data.Data.Data a, Data.Data.Data b) => Data.Data.Data (Data.Fold.Internal.Pair' a b)
- Data.Fold.Internal: instance (Data.Data.Data a, Data.Data.Data s) => Data.Data.Data (Data.Fold.Internal.N a s)
- Data.Fold.Internal: instance (Data.Data.Data a, Data.Data.Data s) => Data.Data.Data (Data.Fold.Internal.S a s)
- Data.Fold.Internal: instance (GHC.Classes.Eq a, GHC.Classes.Eq b) => GHC.Classes.Eq (Data.Fold.Internal.Pair' a b)
- Data.Fold.Internal: instance (GHC.Classes.Ord a, GHC.Classes.Ord b) => GHC.Classes.Ord (Data.Fold.Internal.Pair' a b)
- Data.Fold.Internal: instance (GHC.Read.Read a, GHC.Read.Read b) => GHC.Read.Read (Data.Fold.Internal.Pair' a b)
- Data.Fold.Internal: instance (GHC.Show.Show a, GHC.Show.Show b) => GHC.Show.Show (Data.Fold.Internal.Pair' a b)
+ Data.Fold.Internal: instance (Data.Data.Data b, Data.Data.Data a) => Data.Data.Data (Data.Fold.Internal.Pair' a b)
+ Data.Fold.Internal: instance (Data.Data.Data s, Data.Data.Data a) => Data.Data.Data (Data.Fold.Internal.N a s)
+ Data.Fold.Internal: instance (Data.Data.Data s, Data.Data.Data a) => Data.Data.Data (Data.Fold.Internal.S a s)
+ Data.Fold.Internal: instance (GHC.Classes.Eq b, GHC.Classes.Eq a) => GHC.Classes.Eq (Data.Fold.Internal.Pair' a b)
+ Data.Fold.Internal: instance (GHC.Classes.Ord b, GHC.Classes.Ord a) => GHC.Classes.Ord (Data.Fold.Internal.Pair' a b)
+ Data.Fold.Internal: instance (GHC.Read.Read b, GHC.Read.Read a) => GHC.Read.Read (Data.Fold.Internal.Pair' a b)
+ Data.Fold.Internal: instance (GHC.Show.Show b, GHC.Show.Show a) => GHC.Show.Show (Data.Fold.Internal.Pair' a b)
- Data.Fold: asL1' :: AsL1' p => p a b -> L1' a b
+ Data.Fold: asL1' :: (AsL1' p, AsL' p) => p a b -> L1' a b
- Data.Fold: class AsRM1 p => AsL1' p
+ Data.Fold: class AsRM1 p => AsL1' p where asL1' = asL1' . asL'
- Data.Fold: class AsRM1 p => AsRM p
+ Data.Fold: class AsRM1 p => AsRM p where asM = asM . asR asR = asR . asM
- Data.Fold: class AsRM1 p
+ Data.Fold: class AsRM1 p where asM1 = asM1 . asR1 asR1 = asR1 . asM1
- Data.Fold: class Scan p => Folding p
+ Data.Fold: class Scan p => Folding p where prefix = prefixOf folded postfix = postfixOf folded run = runOf folded
- Data.Fold: class Choice p => Scan p
+ Data.Fold: class Choice p => Scan p where prefix1 = prefix . An postfix1 p = postfix p . An run1 = run . An
- Data.Fold: postfix1 :: Scan p => p a b -> a -> p a b
+ Data.Fold: postfix1 :: (Scan p, Folding p) => p a b -> a -> p a b
- Data.Fold: prefix1 :: Scan p => a -> p a b -> p a b
+ Data.Fold: prefix1 :: (Scan p, Folding p) => a -> p a b -> p a b
- Data.Fold: run1 :: Scan p => a -> p a b -> b
+ Data.Fold: run1 :: (Scan p, Folding p) => a -> p a b -> b
- Data.Fold.Class: class Scan p => Folding p
+ Data.Fold.Class: class Scan p => Folding p where prefix = prefixOf folded postfix = postfixOf folded run = runOf folded
- Data.Fold.Class: class Choice p => Scan p
+ Data.Fold.Class: class Choice p => Scan p where prefix1 = prefix . An postfix1 p = postfix p . An run1 = run . An
- Data.Fold.Class: postfix1 :: Scan p => p a b -> a -> p a b
+ Data.Fold.Class: postfix1 :: (Scan p, Folding p) => p a b -> a -> p a b
- Data.Fold.Class: prefix1 :: Scan p => a -> p a b -> p a b
+ Data.Fold.Class: prefix1 :: (Scan p, Folding p) => a -> p a b -> p a b
- Data.Fold.Class: run1 :: Scan p => a -> p a b -> b
+ Data.Fold.Class: run1 :: (Scan p, Folding p) => a -> p a b -> b
- Data.Fold.Internal: foldDeRef :: (MuRef1 f, Bifoldable (DeRef1 f)) => f a -> FreeMonoid a
+ Data.Fold.Internal: foldDeRef :: forall f a. (MuRef1 f, Bifoldable (DeRef1 f)) => f a -> FreeMonoid a
- Data.Fold.Internal: foldDeRef1 :: (MuRef1 f, Bifoldable1 (DeRef1 f)) => f a -> FreeSemigroup a
+ Data.Fold.Internal: foldDeRef1 :: forall f a. (MuRef1 f, Bifoldable1 (DeRef1 f)) => f a -> FreeSemigroup a
Files
- .travis.yml +16/−17
- CHANGELOG.markdown +6/−0
- Setup.lhs +165/−38
- folds.cabal +9/−3
- tests/doctests.hs +25/−0
- tests/doctests.hsc +0/−73
.travis.yml view
@@ -14,25 +14,25 @@ matrix: include:- - env: CABALVER=1.16 GHCVER=7.6.3 BUILD=cabal+ - env: CABALVER=1.24 GHCVER=7.6.3 BUILD=cabal compiler: ": #GHC 7.6.3"- addons: {apt: {packages: [cabal-install-1.16,ghc-7.6.3,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}+ addons: {apt: {packages: [cabal-install-1.24,ghc-7.6.3,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}} - - env: CABALVER=1.18 GHCVER=7.8.4 BUILD=cabal+ - env: CABALVER=1.24 GHCVER=7.8.4 BUILD=cabal compiler: ": #GHC 7.8.4"- addons: {apt: {packages: [cabal-install-1.18,ghc-7.8.4,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}+ addons: {apt: {packages: [cabal-install-1.24,ghc-7.8.4,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}} - - env: CABALVER=1.22 GHCVER=7.10.1 BUILD=cabal- compiler: ": #GHC 7.10.1"- addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.1,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}+ - env: CABALVER=1.24 GHCVER=7.10.3 BUILD=cabal+ compiler: ": #GHC 7.10.3"+ addons: {apt: {packages: [cabal-install-1.24,ghc-7.10.3,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}} - - env: CABALVER=1.22 GHCVER=7.10.2 BUILD=cabal- compiler: ": #GHC 7.10.2"- addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.2,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}+ - env: CABALVER=1.24 GHCVER=8.0.2 BUILD=cabal+ compiler: ": #GHC 8.0.2"+ addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.2,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}} - - env: CABALVER=1.24 GHCVER=8.0.1 BUILD=cabal- compiler: ": #GHC 8.0.1"- addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.1,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}+ - env: CABALVER=1.24 GHCVER=8.2.1 BUILD=cabal+ compiler: ": #GHC 8.2.1"+ addons: {apt: {packages: [cabal-install-1.24,ghc-8.2.1,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}} - env: BUILD=stack STACK_YAML=stack-7.10.yaml STACK_OPTIONS=--skip-ghc-check addons: {apt: {packages: [cabal-install-1.22,ghc-7.10.2,alex-3.1.4,happy-1.19.5], sources: [hvr-ghc]}}@@ -52,8 +52,8 @@ chmod a+x ~/bin/stack; scripts/travis_long stack --no-terminal setup;; cabal)- export HAPPYVER=1.19.5- export ALEXVER=3.1.4+ export HAPPYVER=1.19.5;+ export ALEXVER=3.1.4; export PATH=~/.cabal/bin:/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:/opt/happy/$HAPPYVER/bin:/opt/alex/$ALEXVER/bin:$PATH;; esac install:@@ -80,8 +80,7 @@ echo "cabal build-cache MISS"; rm -rf $HOME/.cabsnap; mkdir -p $HOME/.ghc $HOME/.cabal/lib $HOME/.cabal/share $HOME/.cabal/bin;- cabal install --only-dependencies --enable-tests --enable-benchmarks;- if [ "$GHCVER" = "7.10.1" ]; then cabal install Cabal-1.22.4.0; fi;+ cabal install -j --only-dependencies --enable-tests --enable-benchmarks; fi; if [ ! -d $HOME/.cabsnap ]; then echo "snapshotting package-db to build-cache";
CHANGELOG.markdown view
@@ -1,3 +1,9 @@+0.7.2+-----+* Revamp `Setup.hs` to use `cabal-doctest`. This makes it build+ with `Cabal-2.0`, and makes the `doctest`s work with `cabal new-build` and+ sandboxes.+ 0.7.1 ----- * Support `pointed` 5
Setup.lhs view
@@ -1,55 +1,182 @@-#!/usr/bin/runhaskell \begin{code}-{-# OPTIONS_GHC -Wall #-}+{-# LANGUAGE CPP #-}+{-# LANGUAGE OverloadedStrings #-} module Main (main) where +#ifndef MIN_VERSION_cabal_doctest+#define MIN_VERSION_cabal_doctest(x,y,z) 0+#endif+++#if MIN_VERSION_cabal_doctest(1,0,0)+import Distribution.Extra.Doctest ( defaultMainWithDoctests )+#else++-- Otherwise we provide a shim++#ifndef MIN_VERSION_Cabal+#define MIN_VERSION_Cabal(x,y,z) 0+#endif+#ifndef MIN_VERSION_directory+#define MIN_VERSION_directory(x,y,z) 0+#endif+#if MIN_VERSION_Cabal(1,24,0)+#define InstalledPackageId UnitId+#endif++import Control.Monad ( when ) import Data.List ( nub )-import Data.Version ( showVersion )-import Distribution.Package ( PackageName(PackageName), Package, PackageId, InstalledPackageId, packageVersion, packageName )-import Distribution.PackageDescription ( PackageDescription(), TestSuite(..) )+import Data.String ( fromString )+import Distribution.Package ( InstalledPackageId )+import Distribution.Package ( PackageId, Package (..), packageVersion )+import Distribution.PackageDescription ( PackageDescription(), TestSuite(..) , Library (..), BuildInfo (..)) import Distribution.Simple ( defaultMainWithHooks, UserHooks(..), simpleUserHooks )-import Distribution.Simple.Utils ( rewriteFile, createDirectoryIfMissingVerbose, copyFiles )+import Distribution.Simple.Utils ( rewriteFile, createDirectoryIfMissingVerbose ) import Distribution.Simple.BuildPaths ( autogenModulesDir )-import Distribution.Simple.Setup ( BuildFlags(buildVerbosity), Flag(..), fromFlag, HaddockFlags(haddockDistPref))-import Distribution.Simple.LocalBuildInfo ( withLibLBI, withTestLBI, LocalBuildInfo(), ComponentLocalBuildInfo(componentPackageDeps) )-import Distribution.Text ( display )-import Distribution.Verbosity ( Verbosity, normal )+import Distribution.Simple.Setup ( BuildFlags(buildDistPref, buildVerbosity), fromFlag)+import Distribution.Simple.LocalBuildInfo ( withPackageDB, withLibLBI, withTestLBI, LocalBuildInfo(), ComponentLocalBuildInfo(componentPackageDeps), compiler )+import Distribution.Simple.Compiler ( showCompilerId , PackageDB (..))+import Distribution.Text ( display , simpleParse ) import System.FilePath ( (</>) ) -main :: IO ()-main = defaultMainWithHooks simpleUserHooks- { buildHook = \pkg lbi hooks flags -> do- generateBuildModule (fromFlag (buildVerbosity flags)) pkg lbi- buildHook simpleUserHooks pkg lbi hooks flags- , postHaddock = \args flags pkg lbi -> do- copyFiles normal (haddockOutputDir flags pkg) []- postHaddock simpleUserHooks args flags pkg lbi- }+#if MIN_VERSION_Cabal(1,25,0)+import Distribution.Simple.BuildPaths ( autogenComponentModulesDir )+#endif -haddockOutputDir :: Package p => HaddockFlags -> p -> FilePath-haddockOutputDir flags pkg = destDir where- baseDir = case haddockDistPref flags of- NoFlag -> "."- Flag x -> x- destDir = baseDir </> "doc" </> "html" </> display (packageName pkg)+#if MIN_VERSION_directory(1,2,2)+import System.Directory (makeAbsolute)+#else+import System.Directory (getCurrentDirectory)+import System.FilePath (isAbsolute) -generateBuildModule :: Verbosity -> PackageDescription -> LocalBuildInfo -> IO ()-generateBuildModule verbosity pkg lbi = do- let dir = autogenModulesDir lbi- createDirectoryIfMissingVerbose verbosity True dir- withLibLBI pkg lbi $ \_ libcfg -> do- withTestLBI pkg lbi $ \suite suitecfg -> do- rewriteFile (dir </> "Build_" ++ testName suite ++ ".hs") $ unlines- [ "module Build_" ++ testName suite ++ " where"- , "deps :: [String]"- , "deps = " ++ (show $ formatdeps (testDeps libcfg suitecfg))+makeAbsolute :: FilePath -> IO FilePath+makeAbsolute p | isAbsolute p = return p+ | otherwise = do+ cwd <- getCurrentDirectory+ return $ cwd </> p+#endif++generateBuildModule :: String -> BuildFlags -> PackageDescription -> LocalBuildInfo -> IO ()+generateBuildModule testsuiteName flags pkg lbi = do+ let verbosity = fromFlag (buildVerbosity flags)+ let distPref = fromFlag (buildDistPref flags)++ -- Package DBs+ let dbStack = withPackageDB lbi ++ [ SpecificPackageDB $ distPref </> "package.conf.inplace" ]+ let dbFlags = "-hide-all-packages" : packageDbArgs dbStack++ withLibLBI pkg lbi $ \lib libcfg -> do+ let libBI = libBuildInfo lib++ -- modules+ let modules = exposedModules lib ++ otherModules libBI+ -- it seems that doctest is happy to take in module names, not actual files!+ let module_sources = modules++ -- We need the directory with library's cabal_macros.h!+#if MIN_VERSION_Cabal(1,25,0)+ let libAutogenDir = autogenComponentModulesDir lbi libcfg+#else+ let libAutogenDir = autogenModulesDir lbi+#endif++ -- Lib sources and includes+ iArgs <- mapM (fmap ("-i"++) . makeAbsolute) $ libAutogenDir : hsSourceDirs libBI+ includeArgs <- mapM (fmap ("-I"++) . makeAbsolute) $ includeDirs libBI++ -- CPP includes, i.e. include cabal_macros.h+ let cppFlags = map ("-optP"++) $+ [ "-include", libAutogenDir ++ "/cabal_macros.h" ]+ ++ cppOptions libBI++ withTestLBI pkg lbi $ \suite suitecfg -> when (testName suite == fromString testsuiteName) $ do++ -- get and create autogen dir+#if MIN_VERSION_Cabal(1,25,0)+ let testAutogenDir = autogenComponentModulesDir lbi suitecfg+#else+ let testAutogenDir = autogenModulesDir lbi+#endif+ createDirectoryIfMissingVerbose verbosity True testAutogenDir++ -- write autogen'd file+ rewriteFile (testAutogenDir </> "Build_doctests.hs") $ unlines+ [ "module Build_doctests where"+ , ""+ -- -package-id etc. flags+ , "pkgs :: [String]"+ , "pkgs = " ++ (show $ formatDeps $ testDeps libcfg suitecfg)+ , ""+ , "flags :: [String]"+ , "flags = " ++ show (iArgs ++ includeArgs ++ dbFlags ++ cppFlags)+ , ""+ , "module_sources :: [String]"+ , "module_sources = " ++ show (map display module_sources) ] where- formatdeps = map (formatone . snd)- formatone p = case packageName p of- PackageName n -> n ++ "-" ++ showVersion (packageVersion p)+ -- we do this check in Setup, as then doctests don't need to depend on Cabal+ isOldCompiler = maybe False id $ do+ a <- simpleParse $ showCompilerId $ compiler lbi+ b <- simpleParse "7.5"+ return $ packageVersion (a :: PackageId) < b + formatDeps = map formatOne+ formatOne (installedPkgId, pkgId)+ -- The problem is how different cabal executables handle package databases+ -- when doctests depend on the library+ | packageId pkg == pkgId = "-package=" ++ display pkgId+ | otherwise = "-package-id=" ++ display installedPkgId++ -- From Distribution.Simple.Program.GHC+ packageDbArgs :: [PackageDB] -> [String]+ packageDbArgs | isOldCompiler = packageDbArgsConf+ | otherwise = packageDbArgsDb++ -- GHC <7.6 uses '-package-conf' instead of '-package-db'.+ packageDbArgsConf :: [PackageDB] -> [String]+ packageDbArgsConf dbstack = case dbstack of+ (GlobalPackageDB:UserPackageDB:dbs) -> concatMap specific dbs+ (GlobalPackageDB:dbs) -> ("-no-user-package-conf")+ : concatMap specific dbs+ _ -> ierror+ where+ specific (SpecificPackageDB db) = [ "-package-conf=" ++ db ]+ specific _ = ierror+ ierror = error $ "internal error: unexpected package db stack: "+ ++ show dbstack++ -- GHC >= 7.6 uses the '-package-db' flag. See+ -- https://ghc.haskell.org/trac/ghc/ticket/5977.+ packageDbArgsDb :: [PackageDB] -> [String]+ -- special cases to make arguments prettier in common scenarios+ packageDbArgsDb dbstack = case dbstack of+ (GlobalPackageDB:UserPackageDB:dbs)+ | all isSpecific dbs -> concatMap single dbs+ (GlobalPackageDB:dbs)+ | all isSpecific dbs -> "-no-user-package-db"+ : concatMap single dbs+ dbs -> "-clear-package-db"+ : concatMap single dbs+ where+ single (SpecificPackageDB db) = [ "-package-db=" ++ db ]+ single GlobalPackageDB = [ "-global-package-db" ]+ single UserPackageDB = [ "-user-package-db" ]+ isSpecific (SpecificPackageDB _) = True+ isSpecific _ = False+ testDeps :: ComponentLocalBuildInfo -> ComponentLocalBuildInfo -> [(InstalledPackageId, PackageId)] testDeps xs ys = nub $ componentPackageDeps xs ++ componentPackageDeps ys++defaultMainWithDoctests :: String -> IO ()+defaultMainWithDoctests testSuiteName = defaultMainWithHooks simpleUserHooks+ { buildHook = \pkg lbi hooks flags -> do+ generateBuildModule testSuiteName flags pkg lbi+ buildHook simpleUserHooks pkg lbi hooks flags+ }++#endif++main :: IO ()+main = defaultMainWithDoctests "doctests" \end{code}
folds.cabal view
@@ -1,6 +1,6 @@ name: folds category: Data, Comonads, Enumerator-version: 0.7.1+version: 0.7.2 license: BSD3 cabal-version: >= 1.8 license-file: LICENSE@@ -29,6 +29,12 @@ . More information on this approach can be found in the <http://conal.net/blog/posts/another-lovely-example-of-type-class-morphisms "Another lovely example of type class morphisms"> and <http://conal.net/blog/posts/more-beautiful-fold-zipping "More beautiful fold zipping"> posts by Conal Elliott, as well as in Gabriel Gonzales' <http://www.haskellforall.com/2013/08/composable-streaming-folds.html "Composable Streaming Folds"> +custom-setup+ setup-depends:+ base >= 4.3 && <5,+ Cabal >= 1.10,+ cabal-doctest >= 1 && <1.1+ source-repository head type: git location: git://github.com/ekmett/folds.git@@ -66,7 +72,7 @@ semigroupoids >= 4 && < 6, transformers >= 0.3 && < 0.6, unordered-containers >= 0.2 && < 0.3,- vector >= 0.10 && < 0.12+ vector >= 0.10 && < 0.13 if impl(ghc < 7.8) build-depends: tagged >= 0.7 && < 1@@ -113,7 +119,7 @@ ghc-options: -Wall -threaded hs-source-dirs: tests - if !flag(test-doctests) || impl(ghc >= 8)+ if !flag(test-doctests) buildable: False else build-depends:
+ tests/doctests.hs view
@@ -0,0 +1,25 @@+-----------------------------------------------------------------------------+-- |+-- Module : Main (doctests)+-- Copyright : (C) 2012-14 Edward Kmett+-- License : BSD-style (see the file LICENSE)+-- Maintainer : Edward Kmett <ekmett@gmail.com>+-- Stability : provisional+-- Portability : portable+--+-- This module provides doctests for a project based on the actual versions+-- of the packages it was built with. It requires a corresponding Setup.lhs+-- to be added to the project+-----------------------------------------------------------------------------+module Main where++import Build_doctests (flags, pkgs, module_sources)+import Data.Foldable (traverse_)+import Test.DocTest++main :: IO ()+main = do+ traverse_ putStrLn args+ doctest args+ where+ args = flags ++ pkgs ++ module_sources
− tests/doctests.hsc
@@ -1,73 +0,0 @@-{-# LANGUAGE CPP #-}-{-# LANGUAGE ForeignFunctionInterface #-}--------------------------------------------------------------------------------- |--- Module : Main (doctests)--- Copyright : (C) 2012-13 Edward Kmett--- License : BSD-style (see the file LICENSE)--- Maintainer : Edward Kmett <ekmett@gmail.com>--- Stability : provisional--- Portability : portable------ This module provides doctests for a project based on the actual versions--- of the packages it was built with. It requires a corresponding Setup.lhs--- to be added to the project-------------------------------------------------------------------------------module Main where--import Build_doctests (deps)-import Control.Applicative-import Control.Monad-import Data.List-import System.Directory-import System.FilePath-import Test.DocTest--##if defined(mingw32_HOST_OS)-##if defined(i386_HOST_ARCH)-##define USE_CP-import Control.Applicative-import Control.Exception-import Foreign.C.Types-foreign import stdcall "windows.h SetConsoleCP" c_SetConsoleCP :: CUInt -> IO Bool-foreign import stdcall "windows.h GetConsoleCP" c_GetConsoleCP :: IO CUInt-##elif defined(x86_64_HOST_ARCH)-##define USE_CP-import Control.Applicative-import Control.Exception-import Foreign.C.Types-foreign import ccall "windows.h SetConsoleCP" c_SetConsoleCP :: CUInt -> IO Bool-foreign import ccall "windows.h GetConsoleCP" c_GetConsoleCP :: IO CUInt-##endif-##endif---- | Run in a modified codepage where we can print UTF-8 values on Windows.-withUnicode :: IO a -> IO a-##ifdef USE_CP-withUnicode m = do- cp <- c_GetConsoleCP- (c_SetConsoleCP 65001 >> m) `finally` c_SetConsoleCP cp-##else-withUnicode m = m-##endif--main :: IO ()-main = withUnicode $ getSources >>= \sources -> doctest $- "-isrc"- : "-idist/build/autogen"- : "-optP-include"- : "-optPdist/build/autogen/cabal_macros.h"- : "-hide-all-packages"- : map ("-package="++) deps ++ sources--getSources :: IO [FilePath]-getSources = filter (isSuffixOf ".hs") <$> go "src"- where- go dir = do- (dirs, files) <- getFilesAndDirectories dir- (files ++) . concat <$> mapM go dirs--getFilesAndDirectories :: FilePath -> IO ([FilePath], [FilePath])-getFilesAndDirectories dir = do- c <- map (dir </>) . filter (`notElem` ["..", "."]) <$> getDirectoryContents dir- (,) <$> filterM doesDirectoryExist c <*> filterM doesFileExist c