Oscar Galindo OscarGalindo

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Yoneda Intuition from Humble Beginnings

Let's explore the Yoneda lemma. You don't need to be an advanced Haskeller to understand this. In fact I claim you will understand the first section fine if you're comfortable with map/fmap and id.

I am not out to motivate it, but we will explore Yoneda at the level of terms and at the level of types.

Introduction

Sometimes you want to be able to debug a bash script. Usually the -x option will suffice but sometimes something more sophisticated is needed.

In such instances using the DEBUG trap is often a good choice.

Attached to this gist is a example script to demonstrate how such a thing would work.

public static class AutolayoutHelper
{
	[DllImport (Constants.ObjectiveCLibrary, EntryPoint = "objc_msgSend")]
	static extern IntPtr IntPtr_objc_msgSend (IntPtr receiver, IntPtr selector);

	public static void AutoLayoutTrace ()
	{
		var trace = Runtime.GetNSObject (IntPtr_objc_msgSend (UIApplication.SharedApplication.KeyWindow.Handle, new Selector ("_autolayoutTrace").Handle));

The Ultimate Unit Testing Cheat-sheet

Sinon Chai
Chai
Sinon

	*.tfbackup
	.terraform/
	*.tfstate
	.terraform.tfstate.lock.info

	# Makefile for transpiling with Babel in a Node app, or in a client- or
	# server-side shared library.

	.PHONY: all clean

	# Install `babel-cli` in a project to get the transpiler.
	babel := node_modules/.bin/babel

	# Identify modules to be transpiled by recursively searching the `src/`
	# directory.

	#!/bin/sh

	# Make sure to:
	# 1) Name this file `backup.sh` and place it in /home/ubuntu
	# 2) Run sudo apt-get install awscli to install the AWSCLI
	# 3) Run aws configure (enter s3-authorized IAM user and specify region)
	# 4) Fill in DB host + name
	# 5) Create S3 bucket for the backups and fill it in below (set a lifecycle rule to expire files older than X days in the bucket)
	# 6) Run chmod +x backup.sh
	# 7) Test it out via ./backup.sh

	function logClass(target: any) {

	// save a reference to the original constructor
	var original = target;

	// a utility function to generate instances of a class
	function construct(constructor, args) {
	var c : any = function () {
	return constructor.apply(this, args);
	}

	<div class="container">

	<div class="a">1</div>
	<div class="b">2</div>

	<div class="c">

	<div>3.1</div>
	<div>3.1</div>
	<div>3.1</div>

	// edit these
	$farColor: #ffe4c7;
	$nearColor: #2f4645;
	$layer: 7; // make sure it is +1 the number of layered divs in the HTML
	$perspective: 1;

	.bg {
	background-color: $farColor;
	height: 100%;
	position: absolute;