ak64th

Shallow

Real unit test (isolation, no children render)

Simple shallow

Calls:

constructor
render

Below is the list of modern JS frameworks and almost frameworks – React, Vue, Angular, Ember and others.

All files were downloaded from https://cdnjs.com and named accordingly. Output from ls command is stripped out (irrelevant stuff)

As-is (minified)

$ ls -lhS
566K Jan 4 22:03 angular2.min.js

What forces layout / reflow

All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or layout thrashing, and is common performance bottleneck.

Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.

Element APIs

Getting box metrics

elem.offsetLeft, elem.offsetTop, elem.offsetWidth, elem.offsetHeight, elem.offsetParent

	<!DOCTYPE html>
	<html>
	<head>
	<script src="https://unpkg.com/[email protected]/lib/mobx.umd.js"></script>
	<script>
	var MobxDemo = Object.create(HTMLElement.prototype);
	MobxDemo.attachedCallback = function() {
	var state = mobx.observable({
	counter : parseInt(this.getAttribute("counter"))
	})

	"""
	twisted async/await with asyncio reactor and uvloop
	"""

	import asyncio
	import uvloop
	from asyncio.tasks import ensure_future

	try:
	# as per github source the asyncio reactor is intended to be released in future version

	import pandas as pd

	def _map_to_pandas(rdds):
	""" Needs to be here due to pickling issues """
	return [pd.DataFrame(list(rdds))]

	def toPandas(df, n_partitions=None):
	"""
	Returns the contents of `df` as a local `pandas.DataFrame` in a speedy fashion. The DataFrame is
	repartitioned if `n_partitions` is passed.

	import falcon

	app = falcon.API()

	if __name__ == '__main__':
	from wsgiref.simple_server import make_server
	server = make_server('localhost', 8000, app)

	print("Listening on localhost:8000")
	server.serve_forever()

	ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
	# Don't add passphrase
	openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
	cat jwtRS256.key
	cat jwtRS256.key.pub

	.sidebar_newsletter_sign_up,
	.sidebar_subscribe,
	.sign-up-form-single,
	.signup-form--header,
	.signup-with-checkboxes,
	.skinny-sign-up,
	.slidedown-newsletter,
	.small-newsletter,
	.social-link-mail,
	.social_newsletter_box,

	# post_loc.txt contains the json you want to post
	# -p means to POST it
	# -H adds an Auth header (could be Basic or Token)
	# -T sets the Content-Type
	# -c is concurrent clients
	# -n is the number of requests to run in the test

	ab -p post_loc.txt -T application/json -H 'Authorization: Token abcd1234' -c 10 -n 2000 http://example.com/api/v1/locations/