Dan Rose rotu

Roboticist, Firmware engineer, Pythonista, Mathemagician, Father of two awesome girls.

rotu / iterator.bench.js

Last active October 28, 2024 02:12

Array of object iteration strategies, benchmarked

	import { assert } from 'jsr:@std/assert'

	const COUNT = 8
	const ar = []
	for (let i = 0; i < COUNT; ++i) {
	ar.push({ x: Math.random() * 1000 })
	}
	const sum = ar.reduce((a, obj) => (a + obj.x), 0)

	function mapX() {

rotu / iterators.mjs

Created September 23, 2023 04:54

iterator microbenchmark shootout

	const { baseline, bench, run } = await import('https://esm.sh/mitata')

	const data = Array.from(Array(1000).map(() => Math.random()))

	bench('for {0;<;++} data[i]', () => {
	let sum = 0
	for (let i = 0; i < data.length; ++i) {
	sum += data[i]
	}
	return sum

rotu / MyDataVIew.js

Created September 13, 2023 08:38

Minimal ArrayBufferView compatible with DataVIew methods

	// `extends null` isn't necessary but I prefer it.
	class BareDataView extends null {
	static fromBuffer(...args) {
	// construct a new object, passing args to the DataView() constructor
	// but use this (i.e. the BareDataView class) to set the prototype
	return Reflect.construct(DataView, args, this)
	}
	}

	// Select only the properties we actually want to expose

rotu / prettier-multiple.sh

Created May 22, 2023 22:32

prettier multiple files

	# list files changed by git (Added or Modified) and tidy them up in prettier
	# xargs is a linux thing, but on Windows, can use Gow to get it.
	git diff --name-only --diff-filter=AM \| xargs -n99 prettier -uw

rotu / main.mjs

Created January 17, 2023 20:24

open window and inject module

	j = "data:text/javascript,"+encodeURIComponent(`console.log("hello from "+import.meta.url)`)

	w = window.open("about:blank")
	x1 = await w.eval(`import(${JSON.stringify(j)})`)
	x2 = await w.eval(`import(${JSON.stringify(j)})`)

	w2 = window.open("about:blank")
	y1 = await w2.eval(`import(${JSON.stringify(j)})`)
	y2 = await w2.eval(`import(${JSON.stringify(j)})`)

rotu / index.html

Created December 26, 2022 22:14

Untitled benchmark (https://jsbench.github.io/#380ebf26d5c58a3f8891726f1511531a) #jsbench #jsperf

	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf-8"/>
	<title>Untitled benchmark</title>
	<script src="https://cdnjs.cloudflare.com/ajax/libs/benchmark/1.0.0/benchmark.min.js"></script>
	<script src="./suite.js"></script>
	</head>
	<body>
	<h1>Open the console to view the results</h1>

rotu / pyproject.toml

Last active October 7, 2020 16:25

Poetry Colcon

	[tool.poetry]
	name = "Colcon"
	version = "0.0.1"
	description = "Workspace for editing Colcon"
	authors = ["Dan Rose <[email protected]>"]

	[tool.poetry.dependencies]
	python = "^3.8"
	colcon-argcomplete = {git = "https://github.com/colcon/colcon-argcomplete.git"}
	colcon-bash = {git = "https://github.com/colcon/colcon-bash.git"}

rotu / build-fast-dds.sh

Created August 19, 2020 15:36

	PREFIX=$PWD/prefix
	mkdir $PREFIX

	# Fast-CDR

	git clone https://github.com/eProsima/Fast-CDR.git
	mkdir Fast-CDR/build && cd Fast-CDR/build
	cmake .. -DCMAKE_INSTALL_PREFIX="$PREFIX" -DCMAKE_PREFIX_PATH="$PREFIX"
	cmake --build . --target install
	cd ../..

rotu / deprecation_test.c

Last active May 11, 2020 22:11

	enum Foo1 {
	Bar1=1,
	Baz1
	#ifdef _MSC_VER
	#pragma deprecated(Baz1)
	#else
	__attribute__ ((deprecated("Use something else")))
	#endif
	= 2,
	Bang1=3,

rotu / ros2.repos

Created May 1, 2020 20:39

Generated repos file for https://github.com/ros2/urdf/pull/12

	repositories:
	ament/ament_cmake:
	type: git
	url: https://github.com/ament/ament_cmake.git
	version: master
	ament/ament_index:
	type: git
	url: https://github.com/ament/ament_index.git
	version: master
	ament/ament_lint: