Dennis Matthias Scherf DennisMatthiasScherf

Automated speedtest using a Raspberry Pi, Cronjobs and Airtables

We're gonna install the Okla Speedtest (speedtest.net) CLI and a write the results into a Airtables table.

Setup

First we're gonna install all required dependecies to run the speedtest CLI.

sudo apt-get install gnupg1 apt-transport-https dirmngr jq

VS Code: Debugging Jest

Sometimes, debugging with console.log is not enough to find out what is happening in the code, as console.log prints only plain objects but neither functions nor objects with circular references. Besides, it's possible you may need to know the context and flow of the code.

Read more about debugging with VS Code in VS Code: Debugging.

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

General rules

Follow standard conventions.
Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
Boy scout rule. Leave the campground cleaner than you found it.
Always find root cause. Always look for the root cause of a problem.

Design rules

People

`:bowtie:`	😄 `:smile:`	😆 `:laughing:`
😊 `:blush:`	😃 `:smiley:`	☺️ `:relaxed:`
😏 `:smirk:`	😍 `:heart_eyes:`	😘 `:kissing_heart:`
😚 `:kissing_closed_eyes:`	😳 `:flushed:`	😌 `:relieved:`
😆 `:satisfied:`	😁 `:grin:`	😉 `:wink:`
😜 `:stuck_out_tongue_winking_eye:`	😝 `:stuck_out_tongue_closed_eyes:`	😀 `:grinning:`
😗 `:kissing:`	😙 `:kissing_smiling_eyes:`	😛 `:stuck_out_tongue:`

Most configuration really isn't about the app -- it's about where the app runs, what keys it needs to communicate with third party API's, the db password and username, etc... They're just deployment details -- and there are lots of tools to help manage environment variables -- not the least handy being a simple .env file with all your settings. Simply source the appropriate env before you launch the app in the given env (you could make it part of a launch script, for instance).

env files look like this:

SOMEVAR="somevalue"
ANOTHERVAR="anothervalue"

To source it:

$ source dev.env # or staging.env, or production.env, depending on where you're deploying to

	// dm Klopapier Widget
	//
	// Copyright (C) 2020 by marco79 <[email protected]>
	//
	// Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
	//
	// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
	// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
	// IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE

	const url = `https://projects.fivethirtyeight.com/2020-election-forecast/us_simulations.json`;
	const req = new Request(url);
	const res = await req.loadJSON();

	if (config.runsInWidget) {
	const biden = res[0].simulations.filter((x) => x.winner === 'Biden').length;
	const trump = res[0].simulations.filter((x) => x.winner === 'Trump').length;

	let widget = new ListWidget();
	widget.backgroundColor = new Color('#000');

	// An autoresize directive that works with ion-textarea in Ionic 2
	// Usage example: <ion-textarea autoresize [(ngModel)]="body"></ion-textarea>
	// Based on https://www.npmjs.com/package/angular2-autosize

	import { Directive, HostListener, ElementRef } from "@angular/core";

	@Directive({
	selector: "ion-textarea[autoresize]" // Attribute selector
	})
	export class Autoresize {