Philip B. philipbel

Set Up a Haskell Development Environment in Three Steps

a Haskell Development Environment consist in a compiler (ghc), a language server (hls), a building tool (cabal or stack), and an editor compatible with the language server protocol.

The best way to have a coherent installation of these components is with the ghcup tool.

Step 1: Install GHCup. You'll be prompted to install some tools. Say yes to hls. Do not install stack yet (see below).
Step 2: Install vscode
Step 3: Open vscode and install the haskell extension either using the extension panel or pressing CTRL+P and ext install haskell.haskell.

	ACTION
	AD_HOC_CODE_SIGNING_ALLOWED
	ALTERNATE_GROUP
	ALTERNATE_MODE
	ALTERNATE_OWNER
	ALWAYS_SEARCH_USER_PATHS
	ALWAYS_USE_SEPARATE_HEADERMAPS
	APPLE_INTERNAL_DEVELOPER_DIR
	APPLE_INTERNAL_DIR
	APPLE_INTERNAL_DOCUMENTATION_DIR

	// Inspiration: https://gist.github.com/NinoScript/47819cf6fe36d6845aee32d19b423e9b
	//: Playground - noun: a place where people can play
	import UIKit

	enum SavableEnum {
	case simpleCase
	case associatedValue(String)
	case anotherAssociated(Int)
	}
	extension SavableEnum {

	/*

	Erica Sadun, http://ericasadun.com
	Cross Platform Defines

	Apple Platforms Only
	Will update to #if canImport() when available

	*/

	import RealmSwift
	import Realm

	protocol CascadeDeleting {
	func delete<S: Sequence>(_ objects: S, cascading: Bool) where S.Iterator.Element: Object
	func delete<Entity: Object>(_ entity: Entity, cascading: Bool)
	}

	extension Realm: CascadeDeleting {
	func delete<S: Sequence>(_ objects: S, cascading: Bool) where S.Iterator.Element: Object {

	//
	// Created by @fewlinesofcode on 9/6/18.
	// Copyright (c) 2018 Oleksandr Glagoliev. All rights reserved.
	//

	public class Interval<T: Comparable> {
	private (set) var start: T
	private (set) var end: T
	var max: T