Tyler Deitz tvler

tvler / getCircularArrayIndex.js

Created April 16, 2018 23:22

Get circular array index

	const getCircularArrayIndex = (i, { length }) =>
	(i % length + length) % length;

	const testArray = new Array(5);

	for (let i = -30; i < 31; i++) {
	console.log(i, getCircularArrayIndex(i, testArray))
	}

tvler / imessage-pics.sh

Created March 22, 2018 14:55

(MacOS) Open all iMessage attachments in Preview

open -a Preview ~/Library/Messages/Attachments

tvler / FormDataToURLSearchParams.js

Created January 14, 2018 00:20

FormData into URLSearchParams one-liner

new URLSearchParams([...new FormData(ev.target)])

tvler / pick.js

Last active April 19, 2022 20:14

Experimental notation for picking a subset of a js object

	const getProxy = (target = {}, key) =>
	target[key] \|\| (target[key] = new Proxy({}, { get: getProxy }));

	const fillPick = (proxy, fn, fromObject = fn(proxy)) =>
	Object.assign(
	{},
	...Object.entries(proxy).map(([key, value]) => ({
	[key]: Object.keys(value).length
	? fillPick(value, fn, fromObject[key])
	: fromObject[key],

tvler / setStateArraySplice.js

Last active December 10, 2017 08:57

A setState function to immutably splice an array property

	// Thanks to https://vincent.billey.me/pure-javascript-immutable-array

	import React, { Component } from 'react';

	const setStateArraySplice = (
	stateKey,
	arrayStart,
	arrayDeleteCount,
	...items
	) => ({

tvler / onwheneva.js

Last active May 11, 2016 01:51

A way to call a JavaScript function on DOMContentLoaded or after, no rush. Great for non-essential async code.

	var test = () => {
	console.log('fired on DOMContentLoaded or after');
	}

	window.onwheneva = test;

	document.readyState !== 'loading' ? onwheneva() :
	document.addEventListener('DOMContentLoaded', onwheneva);