Phill Sparks sparksp

Generic Elm types exercises

A series of exercises to get a feel for how generic types and type variables work in Elm. For each of these, you are given some code that is not compiling. Your task is to get it compiling. You can change the body of the function but not the signature. No cheating with Debug.todo or infinite recursions either 😉

	# this forces Arena into full screen mode on startup, set back to 3 to reset
	# note that if you go into the Arena "Graphics" preference panel, it will reset all of these
	# and you will need to run these commands again
	defaults write com.wizards.mtga "Screenmanager Fullscreen mode" -integer 0
	defaults write com.wizards.mtga "Screenmanager Resolution Use Native" -integer 0

	# you can also replace the long complicated integer bit with any other scaled 16:9
	# resolution your system supports.
	# to find the scaled resolutions, go to System Preferences --> Display and then
	# divide the width by 16 and multiple by 9. on my personal system this ends up

	module ConsistentImports exposing (rule)

	import Dict exposing (Dict)
	import Elm.Syntax.Import exposing (Import)
	import Elm.Syntax.ModuleName exposing (ModuleName)
	import Elm.Syntax.Node as Node exposing (Node)
	import Review.Rule as Rule exposing (Direction, Error, Rule)


	rule : Rule

	#! /usr/bin/env python2
	# Requires: PIL, colormath
	#
	# Improved algorithm now automatically crops the image and uses much
	# better color matching

	from PIL import Image, ImageChops
	from colormath.color_conversions import convert_color
	from colormath.color_objects import LabColor
	from colormath.color_objects import sRGBColor as RGBColor

	{
	"cmd": "/usr/local/bin/titanium.sh run --platform=iphone",
	"shell": true,
	"selector": "source.js",
	"working_dir": "${project_path:${folder}}"
	}

	# http://henrik.nyh.se/2008/12/git-dirty-prompt
	# http://www.simplisticcomplexity.com/2008/03/13/show-your-git-branch-name-in-your-prompt/
	# username@Machine ~/dev/dir[master]$ # clean working directory
	# username@Machine ~/dev/dir[master*]$ # dirty working directory

	function parse_git_dirty {
	[[ $(git status 2> /dev/null \| tail -n1) != "nothing to commit (working directory clean)" ]] && echo "*"
	}
	function parse_git_branch {
	git branch --no-color 2> /dev/null \| sed -e '/^[^]/d' -e "s/ \(.*\)/[\1$(parse_git_dirty)]/"