გიორგი George Dav EarlGeorge

D3 Time Series Day/Week/Month

Wanted to create a (daily) time series chart with automatic rollups to weekly/monthly lines AND nice transitions

Solution

The solution I ended up going with is a bit of an optical illusion.

All three views are technically backed by "daily" data.

async/await is just the do-notation of the Promise monad

CertSimple just wrote a blog post arguing ES2017's async/await was the best thing to happen with JavaScript. I wholeheartedly agree.

In short, one of the (few?) good things about JavaScript used to be how well it handled asynchronous requests. This was mostly thanks to its Scheme-inherited implementation of functions and closures. That, though, was also one of its worst faults, because it led to the "callback hell", an seemingly unavoidable pattern that made highly asynchronous JS code almost unreadable. Many solutions attempted to solve that, but most failed. Promises almost did it, but failed too. Finally, async/await is here and, combined with Promises, it solves the problem for good. On this post, I'll explain why that is the case and trace a link between promises, async/await, the do-notation and monads.

First, let's illustrate the 3 styles by implementing

	// this is the background code...

	// listen for our browerAction to be clicked
	chrome.browserAction.onClicked.addListener(function (tab) {
	// for the current tab, inject the "inject.js" file & execute it
	chrome.tabs.executeScript(tab.ib, {
	file: 'inject.js'
	});
	});

	<!DOCTYPE html>
	<html manifest=sketch.manifest>
	<head>
	<meta charset=utf-8>
	<title>Sketch</title>
	<meta name=apple-mobile-web-app-capable content=yes>
	<meta name=apple-mobile-web-app-status-bar-style content=black>
	<meta name=viewport content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, minimal-ui">
	<link href="http://staticresource.com/formal.css" rel=stylesheet type=text/css>
	<script>eval(unescape(escape('♶♡♲☠♩☽♤♯♣♵♭♥♮♴☮♣♲♥♡♴♥♅♬♥♭♥♮♴☨☧♣♡♮♶♡♳☧☩☬♣☽♩☮♧♥♴♃♯♮♴♥♸♴☨☧☲♤☧☩☬♦☽♤♯♣♵♭♥♮♴☮♣♲♥♡♴♥♅♬♥♭♥♮♴☨☧♬♩♮♫☧☩☬♭☽♤♯♣♵♭♥♮♴☮♣♲♥♡♴♥♅♬♥♭♥♮♴☨☧♬♩♮♫☧☩☻♩☮♷♩♤♴♨☽☲☰☰☻♩☮♨♥♩♧♨♴☽☲☰☰☻♣☮♦♩♬♬♓♴♹♬♥☽☧♬♩♧♨♴♧♯♬♤♥♮♲♯♤♹♥♬♬♯♷☧☻♣☮♢♥♧♩♮♐♡♴♨☨☩☻♣☮♭♯♶♥♔♯☨☱☰☬☰☩☻♣☮♬♩♮♥♔♯☨☱☹☰☬☰☩☻♣☮♱♵♡♤♲♡♴♩♣♃♵♲♶♥♔♯☨☲☰☰☬☰☬☲☰☰☬☱☰☩☻♣☮♬♩♮♥♔♯☨☲☰☰☬☱☹☰☩☻♣☮♱♵♡♤♲♡♴♩♣♃♵♲♶♥♔♯☨☲☰☰☬☲☰☰☬☱☹☰☬☲☰☰☩☻♣☮♬♩♮♥♔♯☨☱☰☬☲☰☰☩☻♣☮♱♵♡♤♲♡♴♩♣♃♵♲♶♥♔♯☨☰☬☲☰☰☬☰☬☱☹☰☩☻♣☮♬♩♮♥♔♯☨☰☬☱☰☩☻♣☮♱♵♡♤♲♡♴♩♣♃♵♲♶♥♔♯☨☰☬☰☬☱☰☬☰☩☻♣☮♣♬♯♳♥♐♡♴♨☨☩☻♣☮♦♩♬♬☨☩☻♣☮♳♴♲♯♫♥♓♴♹♬♥☽☧♲♥♤☧☻♣☮♬♩♮♥♗♩♤♴♨☽☳☰☻♣☮♬♩♮♥♃♡♰☽☧♲♯♵♮♤☧☻♣☮♢♥♧♩♮♐♡♴♨☨☩☻♣☮♭♯♶♥♔♯☨☴☵☬☱☳☰☩☻♣☮♢♥♺♩♥♲♃♵♲♶♥♔♯☨☴☵☬☱☳☰☬☷☰☬☲☰☰☬☱☰☵☬☱☳☰☩☻♣☮♢♥♺♩♥♲♃♵♲♶♥♔♯☨☱☰☵☬☱☳☰☬☱☴☰☬☵☰☬

	#! /bin/bash

	# ECHO COMMAND
	# echo Hello World!

	# VARIABLES
	# Uppercase by convention
	# Letters, numbers, underscores
	NAME="Bob"
	# echo "My name is $NAME"

	import React, { useEffect, useState } from 'react';
	import logo from './logo.svg';
	import './App.css';
	import { Map, TileLayer, Marker, Popup, Tooltip } from 'react-leaflet'
	import tmi from 'tmi.js'

	// https://nominatim.openstreetmap.org/search?format=json&q=stockholm,sweden

	// Firebase App (the core Firebase SDK) is always required and must be listed first
	import * as firebase from "firebase/app"

	// If the user has been on the page for over 12 hours, the next link
	// click will do a full page transition to get new code
	import React from "react";
	import { BrowserRouter, useLocation } from "react-router-dom";

	let hour = 3600000;

	export default function StaleAppRouter(props) {
	let [isStale, setIsStale] = useState(false);

	license: gpl-3.0
	redirect: https://beta.observablehq.com/@mbostock/d3-stacked-bar-chart

	# use ImageMagick convert
	# the order is important. the density argument applies to input.pdf and resize and rotate to output.pdf
	convert -density 90 input.pdf -rotate 0.5 -attenuate 0.2 +noise Multiplicative -colorspace Gray output.pdf

	// get all tweets from @prisma
	from:prisma

	// tweets between two accounts
	from:ryanchenkie to:chris__sev

	// tweets by a hashtag but only with images
	#InaugurationDay filter:images

	// keywords by people on a specific list