michaelt

{-#LANGUAGE OverloadedStrings #-}
import Streaming
import Streaming.Prelude (each, next, yield)
import qualified Data.ByteString.Streaming.Char8 as Q
import qualified Data.ByteString.Char8 as B
import qualified Streaming.Prelude as S
import qualified Control.Foldl as L
import Data.ByteString.Streaming.HTTP -- git clone https://github.com/michaelt/streaming-http
                                      -- cabal install ./streaming-http
infixl 5 >>>; (>>>) = flip (.)

michaelt

-- These examples are based on the tutorial module in the io-streams package

{-#LANGUAGE OverloadedStrings #-}
import Streaming
import Streaming.Prelude (yield, next, each, for, with, subst)
import qualified Streaming.Prelude as S
import qualified Data.ByteString.Char8 as B
import Data.ByteString.Streaming (ByteString)
import qualified Data.ByteString.Streaming.Char8 as Q
import System.IO (withFile, IOMode(..))

benley

#!/bin/bash
# Build, export, and publish the Nix dependencies of an Aurora job.
# Then use the aurora commandline utility to launch it.
#
# This should really be an Aurora client hook, or at least a
# better-integrated wrapper script.
set -e

attr=${1:?USAGE: $0 <attribute>}
shift

edsko

{-# OPTIONS_GHC -Wall -fno-warn-unused-binds #-}
{-# LANGUAGE CPP                 #-}
{-# LANGUAGE FlexibleContexts    #-}
{-# LANGUAGE IncoherentInstances #-}
{-# LANGUAGE RankNTypes          #-}
{-# LANGUAGE ScopedTypeVariables #-}

#if __GLASGOW_HASKELL__ >= 708
{-# LANGUAGE RoleAnnotations     #-}
#endif

nkpart

{-# LANGUAGE NoMonomorphismRestriction #-}
{-# LANGUAGE TemplateHaskell           #-}
{-# OPTIONS_GHC -fwarn-missing-methods #-}
module Err where

import Control.Lens
import Control.Monad.Error
import Control.Monad.Error.Lens

-- Here is a fairly typical situation, where we have low level errors in certain

brendanhay

{-# LANGUAGE OverloadedStrings #-}

module Main where

import Control.Lens            -- lens
import Control.Monad.IO.Class  -- transformers
import Control.Monad.Trans.AWS -- amazonka
import Network.AWS.EC2         -- amazonka-ec2

main :: IO ()

ocharles

> import Control.Monad.Trans
> import Control.Monad.Trans.Iter

The completely iterative free monad transformer lets us capture non-termination as an effect. Furthermore, it's a monad *transformer*, so we can add non-termination on top of other effects.

A convenient combinator is

> untilSuccess :: Monad m => m (Maybe a) -> IterT m a
> untilSuccess f = maybe (delay (untilSuccess f)) return =<< lift f

patrickt

enum Either<A, B> {
    case Left(A)
    case Right(B)
}

func isLeft<A,B>(it : Either<A,B>) -> Bool {
    switch it { case .Left: return true; case .Right: return false }
}

func isRight<A,B>(it : Either<A,B>) -> Bool {

steipete

// Taken from the commercial iOS PDF framework http://pspdfkit.com.
// Copyright (c) 2014 Peter Steinberger, PSPDFKit GmbH. All rights reserved.
// Licensed under MIT (http://opensource.org/licenses/MIT)
//
// You should only use this in debug builds. It doesn't use private API, but I wouldn't ship it.

// PLEASE DUPE rdar://27192338 (https://openradar.appspot.com/27192338) if you would like to see this in UIKit.

#import <objc/runtime.h>
#import <objc/message.h>

ijt

#!/usr/bin/env runhaskell

-- Synopsis:
-- $ cabal install QuickCheck
-- $ runhaskell io_quickcheck_example.hs
--
-- Author: Issac Trotts <issac.trotts@gmail.com>

import Directory
import System.Environment