Ostap Skryshevskyi Kamikadze4GAME

Приёмы оптимизации кода по скорости

Организационные

Культура разработки performance-first: https://tonsky.me/blog/performance-first/
Бюджет скорости: https://wp-rocket.me/blog/performance-budgets/
Performance mantra: http://www.brendangregg.com/blog/2018-06-30/benchmarking-checklist.html

Не зависящие от языка и его реализации

Rosetta Code - реализации задач на разных языках: http://rosettacode.org/wiki/Collections
Статьи по основным структурам данных:

Updated on medium

find out the differences

use git diff to generate file list

git diff --name-only master

limited to certain file types

add ext filter

	`prettier-eslint`	`eslint-plugin-prettier`	`eslint-config-prettier`
What it is	A JavaScript module exporting a single function.	An ESLint plugin.	An ESLint configuration.
What it does	Runs the code (string) through `prettier` then `eslint --fix`. The output is also a string.	Plugins usually contain implementations for additional rules that ESLint will check for. This plugin uses Prettier under the hood and will raise ESLint errors when your code differs from Prettier's expected output.	This config turns off formatting-related rules that might conflict with Prettier, allowing you to use Prettier with other ESLint configs like `eslint-config-airbnb`.
How to use it	Either calling the function in your code or via [`prettier-eslint-cli`](https://github.co

Note

Apple will reject apps that are using private url schemes (Ugh, Apple....) if they are pretty much obvius. Some apps are rejected and others are not, so, be aware of this issue before implementing any of those URL's in your app as a feature.

Updates

[UPDATE 4] iOS 10 update: apparently settings now can be reached using App-Pref instead of prefs
~~[UPDATE 3] For now you just can use url schemes to open your apps's settings with Swift 3.0 (Xcode 8). I'll keep you informed when OS preferences can be reached~~
~~[UPDATE 2] The openURL() method of UIApplication is now deprecated. You should use application(_:open:options:) instead~~
~~[UPDATE 1] Not yet tested in iOS 10. It will fail because of policies changes in URL scheme handling.~~

This will create a proxy server in whatever your availability zone your VPC is in. For me, that's us-east-1b. For you, that may be something different. Steps 10+ should more or less work regardless of your provider since those steps cover the setup and configuration of TinyProxy.

Click the Launch Instance button.
Choose Ubuntu Server 14.04 LTS (HVM), SSD Volume Type. This isn't strictly necessary. If you choose another OS, check its documentation for how to install new packages.
On the Choose an Instance Type screen, select t2.micro. It's Free Tier eligible.
Click the Next: ... buttons until you reach the Configure Security Group screen.
- You may wish to reduce the amount of storage on the Add Storage screen. This is optional.
- You may wish to add a tag on the Tag Instance screen. This is also optional.
On the Configure Security Group screen:

Select Create a new security group.

Facebook: Unfollow people and pages

See comments section for more up-to-date versions of the script. The original script is from 2014 and will not work as is.

Open news feed preferences on your Facebook menu (browser)
Click people or pages
Scroll down (or click see more) until your full list is loaded
Run the script in your browser console

Facebook will block this feature for you while you use it, depending on how much entities you try to unfollow. It automatically unblocks in a couple of hours and you will be able to continue.

	library(geojsonsf)
	library(sf)
	library(rayrender)

	#Data source: https://github.com/telegeography/www.submarinecablemap.com
	cables = geojson_sf("cable-geo.json")

	cablescene = list()
	counter = 1
	for(i in 1:length(cables$geometry)) {

	//
	// This program reads a sourcemap from stdin
	// and replaces the "mappings" property with
	// human readable content. It writes the output
	// to stdout.
	//
	// 1. install the dependencies:
	// npm i concat-stream vlq
	//
	// 2. optional: install jq for pretty printing json

	'use strict';

	const parseExpression = require("./parse-expression");

	function findAll(regex, target) {
	let results = [], match;

	while (match = regex.exec(target)) {
	results.push(match);
	}