mzero

Building on the NUC under Docker

[hs-base] - a Debian 7 (Wheezy) base environment

[debian:7] + build dev-docker/hs-base/Dockerfile --> [hs-base]

[ghc-boot]

• an environment with a bootstrap GHC

mzero

Root cause of haddock / clang failure

Consider this simple .hs file:

module MinHaddockFail where

yo :: String
yo = "yo"

mzero

#!/bin/sh

inPreprocessorMode () {
    hasE=0
    hasU=0
    hasT=0
    for arg in "$@"
    do
        if [ 'x-E' = "x$arg" ];             then hasE=1; fi
        if [ 'x-undef' = "x$arg" ];         then hasU=1; fi

mzero

module SequsHorribilis
where

import Test.HUnit

type Sequs = [Horribilis]
data Horribilis = Atom Int | List Sequs
    deriving (Eq, Show)

upThru :: Int -> Sequs -> Sequs

mzero

{-
Copyright 2012-2013 Google Inc. All Rights Reserved.

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

mzero

module SetPrime where

-- import qualified Data. as List
    -- no need to import List, as the function all is in the Prelude
import Control.Applicative ((<$>), (<*>))
    -- prefer explicit imports most of the time


data Shape = Oval | Squiggle | Diamond deriving (Show, Eq, Bounded, Enum, Ord)
data Color = Red | Purple | Green deriving (Show, Eq, Bounded, Enum, Ord)

mzero

module Triangle where

-- top-down version
minTriangleFlow :: (Num a, Ord a) => [[a]] -> a
minTriangleFlow = minimum . foldl sift []
    where sift as bs = zipWith (+) bs $ pres as
          pres [] = [0]
          pres as@(ah:at) = ah : zipWith min as at ++ [last as]

-- bottom-up version (not safe if triangle input is misformed)

mzero

module Ant
where

import Prelude hiding (log)
import Control.Monad ((>=>))
import Data.List ((\\))


-- | A Simple logging Monad that logs items of type e

mzero

#!/usr/bin/env runghc

module Main where

{-
    Uninstall.hs - a Haskell uninstaller for Mac OS X
    
    This program is really far too big to be in a single file. However, I
    wanted it to be easily distributable and runnable, and so have kept it all
    together.