Matt Oestreich matthewoestreich

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"I shall never be ashamed of citing a bad author if the line is good." -Seneca

matthewoestreich / babel.ts.html

Created August 29, 2021 17:19

Babel+TS in browser

	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8" />
	<meta http-equiv="X-UA-Compatible" content="IE=edge" />
	<meta name="viewport" content="width=device-width, initial-scale=1.0" />
	<title>Document</title>
	</head>
	<body>
	<div id="root"></div>

matthewoestreich / capsFirstLetter.js

Created August 21, 2021 16:12

caps first letter in str

	function capsFirstLetter(str) {
	if (typeof str !== "string") {
	throw new Error("param `str` must be a string!");
	}
	const firstLetterCaps = str[0].toUpperCase();
	const restOfString = str.slice(1);
	return firstLetterCaps + restOfString;
	}

	const myStr = "something";

matthewoestreich / index.js

Created August 11, 2021 19:41

ssrPocNodeJS.js

	const http = require("http");
	const https = require("https");
	const url = require("url");

	const server = http.createServer((request, response) => {
	const path = url.parse(request.url).pathname;
	switch (path) {
	/**
	* This is just documentation comments, doesn't do anything to the code
	* @route '/' home path

matthewoestreich / House.ps1

Created July 30, 2021 18:46

House

	class House {
	# Lower case bc private
	hidden [Room[]]$rooms

	# Constructor (PoSH support overloading, which is huge)
	House() {
	$this.rooms = Room[];
	}

	# [Room[]] means our return type is an array of Rooms

matthewoestreich / house.js

Created July 24, 2021 21:39

matthewoestreich / house.ts

Last active July 30, 2021 00:25

House class with rooms

	/**
	* This code would live inside the library.
	*/

	class House {
	// Private
	#rooms: Array<Room> = [];

	getRooms(): Array<Room> {
	return this.#rooms;

matthewoestreich / findDailyHigh30MinTimeFrame.js

Last active July 4, 2021 05:26

fmpcloud.io locate in which 30 min time frame the high of the day occurred.

	#!/usr/bin/env node
	const fetch = require("node-fetch");

	// Main

	(async () => {
	const apiKey = "<your_api_key>";
	const symbol = "TSLA";
	const from = "2021-06-15";
	const to = "2021-06-19";

matthewoestreich / getRelativeDate.js

Last active March 2, 2021 03:08

Get relative date from a known date. Before or after N days.

	#!/usr/bin/env node
	/**
	* Use this function like:
	* `getRelativeDate("before", 3, new Date("7/2/1992"));`
	*
	* @param {String} beforeOrAfter ("after"\|"before")
	* @param {Number} numberOfDays number of days before or after the 'date' param
	* @param {Date} date the 'RelativeToDate' in 'getDateRelativeToDate'
	*
	* @return * If "before" or "after" is not used as the value of the `beforeOrAfter`

matthewoestreich / prettyPrintJSON.go

Created November 28, 2020 07:14

Pretty Print JSON strings in Golang

	func prettyPrint(i interface{}) {
	prettyJSON, err := json.MarshalIndent(i, "", " ")
	if err != nil {
	fmt.Printf("Error : %s \n", err.Error())
	}
	fmt.Printf("%s\n", string(prettyJSON))
	}

matthewoestreich / server.js

Created November 17, 2020 22:04

Vanilla Node server demonstrating the Node event loop

	const http = require("http");
	const { log } = console;

	// This just lets us block the event loop
	const workFor = 5 // seconds
	const work = (s = workFor) => new Promise(r => setTimeout(r, s * 1000));

	const appPort = 8888

	let reqCount = 0