Jaakko Heusala thejhh

💭

Excellence isn't believing you're best; It's about always striving to get better

Senior in Go, ReactJS, NodeJS, TypeScript. Also 20+ years experience in JavaScript, C++, C, Python, LUA, Perl, PHP, etc.

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thejhh / install-python.yml

Created May 28, 2020 14:51

Python bootstrap for ansible

	---
	- hosts: hosts
	remote_user: root
	gather_facts: false
	tasks:
	- name: Check for Python
	raw: test -e /usr/bin/python
	changed_when: false
	failed_when: false
	register: check_python

thejhh / sample.js

Last active January 21, 2020 14:51

	// Original supposedly "correct" way: https://flaviocopes.com/javascript-async-await-array-map/

	// NOPE! This is correct:

	// Function that returns a promise
	const functionWithPromise = item => {
	return Promise.resolve('ok');
	};

	// Prefer functions without side effects. Much easier to understand, unit test, re-use and optimize (eg. three shaking).

thejhh / shell-node.js

Created December 13, 2019 08:52

Example of executing a NodeJS script with custom environment variables on all systems (supports both node and nodejs names for the executable)

	#!/bin/bash
	':' //; export TERMINAL_COLS="$(tput cols)"
	':' //; exec "$(command -v nodejs \|\| command -v node)" -- "$0" "$@"

	const TERMINAL_COLS = parseInt(process.env.TERMINAL_COLS, 10);

	console.log(TERMINAL_COLS);

thejhh / app.html

Created October 11, 2019 18:41

POC for $scope.$digest() vs $rootScope.$evalAsync() problem

	<html>
	</html>

thejhh / README.md

Last active June 4, 2019 17:58

Attempt to patch OpenWRT 18.04 for Teltonika RUT240

This patch has something still wrong, since Teltonika RUT240 gives this error:

# sysupgrade -v openwrt-ar71xx-generic-rut200-squashfs-factory.bin
Invalid image, not supported on this device.
Image check 'platform_check_image' failed.

thejhh / get-property.html

Created May 30, 2019 08:12

Lodash's recursive `_.get(value, key)` functionality implemented in Liquid's include partial for Github Pages / Jekyll

	{% comment %}

	This works like Lodash's `_.get(value, key)`, where `value` can be an object and `key` a string path to specific value.

	Use it like:

	{% assign translation = site.data.lang[site.lang] %}
	{% capture title %}{% include common/get-property.html value=translation key=page.title %}{% endcapture %}

	And so, you can have your Front Matter title as "path.to.key" translated from your _data/lang/{fi,en}.json to correct value.

thejhh / Foo.js

Created May 11, 2019 17:47

ES6 and interfaces in WebStorm


	/**
	* @interface
	*/
	class Foo {

	/**
	* @returns {string}
	*/
	foo () {

thejhh / surfaceGoLteNVMeSSD.html

Created March 28, 2019 19:51

Bonnie++ on Surface Go, Windows 10, Ubuntu 18.04 over WSL with NVMe SSD

<!DOCTYPE html PUBLIC "-//W3C//Dtd XHTML 1.0 Strict//EN" "http://www.w3.org/tr/xhtml1/Dtd/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html;charset=utf-8" /><title>Bonnie++ Benchmark results</title><style type="text/css">td.header {text-align: center; background-color: "#CCFFFF" }td.rowheader {text-align: center; background-color: "#CCCFFF" }td.size {text-align: center; background-color: "#CCCFFF" }td.ksec {text-align: center; fontstyle: italic }</style></head><body><table border="3" cellpadding="2" cellspacing="1"><tr><td colspan="2" class="header"><font size=+1><b>Version 1.97</b></font></td><td colspan="6" class="header"><font size=+2><b>Sequential Output</b></font></td><td colspan="4" class="header"><font size=+2><b>Sequential Input</b></font></td><td colspan="2" rowspan="2" class="header"><font size=+2><b>Random<br>Seeks</b></font></td><td colspan="1" class="header"></td><td colspan="6" class="header"><font size=+2><b>Sequential Create<

thejhh / LinuxNetworkingCommands.md

Last active March 23, 2019 09:01

Linux network diagnostic & debugging command reference

Ethernet device information

Display features on interface

ethtool -k INTERFACE

Network testing

thejhh / FooList.js

Last active November 3, 2018 17:56

"Interface" / Protocols implementation using ES6 and Symbols

	// @norjs/Interface is commercial package from https://www.norjs.com
	import Interface from '@norjs/Interface';

	import listInterface from './listInterface.js';

	class FooList {

	// `listInterface.getList` is reference to an unique Symbol value for the name of the method.
	//
	// Using Symbols may look a bit strange, but this makes it possible to use

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