Sam El-Borai dgellow

The introduction to Reactive Programming you've been missing

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

Clojure Destructuring Tutorial and Cheat Sheet

(Related blog post)

Simply put, destructuring in Clojure is a way extract values from a datastructure and bind them to symbols, without having to explicitly traverse the datstructure. It allows for elegant and concise Clojure code.

Vectors and Sequences

2015-01-29 Unofficial Relay FAQ

Compilation of questions and answers about Relay from React.js Conf.

Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.

What is Relay?

Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).

I've been deceiving you all. I had you believe that Svelte was a UI framework — unlike React and Vue etc, because it shifts work out of the client and into the compiler, but a framework nonetheless.

But that's not exactly accurate. In my defense, I didn't realise it myself until very recently. But with Svelte 3 around the corner, it's time to come clean about what Svelte really is.

Svelte is a language.

Specifically, Svelte is an attempt to answer a question that many people have asked, and a few have answered: what would it look like if we had a language for describing reactive user interfaces?

A few projects that have answered this question:

13 valuable things I learned using CMake

Author : Dua Guillaume
Date : 04-26-2020

Requirement : A first experience with CMake

Intro

As a modern C++ specialist, my job is to focus on software development, from a performance and quality perspective.

	(defn v-> [s v]
	"pushes value onto stack, if possible, returns new head/tail"
	(let [p (promise)]
	(if (deliver s (cons v (list p)))
	p)))

	(defn v<- [s]
	"returns lazy sequence of actual values, without head/tail"
	(when (realized? s)
	(cons (first @s)

	import os
	import opengl
	import glfw/wrapper as glfw

	var
	win: GLFWwindow
	vaoID: GLuint
	vboID: GLuint
	cboID: GLuint
	vertexShaderID: GLuint

	#!/bin/bash

	# Automatically configure a VM download Coursera courses.

	# This script works as a user data file for use with a cloud VM.
	# This script will resume downloading if the VM is restarted.
	# This script works with Debian jessie (or possibly Ubuntu with systemd).

	# You must enroll in each course and accept the Honor of Code of each course
	# before you can download them.

	-- Create the raw events table
	CREATE TABLE page_views (
	site_id int,
	path text,
	client_ip inet,
	view_time timestamptz default now(),
	view_id bigserial
	);

	-- Allow fast lookups of ranges of sequence IDs

	BEGIN;

	-- note: the downside of a DOMAIN type in pg is that the type cannot be modified if it's used in
	-- a composite-type column as yet (i hope we don't do that)

	-- pgTAP is a suite of test functions to test SQL scripts on PostgreSQL - see https://pgtap.org/
	CREATE EXTENSION IF NOT EXISTS pgtap;

	-- we will have 4 pgTAP tests
	SELECT plan(4);