| // Файл "tsconfig.json": | |
| // - устанавливает корневой каталог проекта TypeScript; | |
| // - выполняет настройку параметров компиляции; | |
| // - устанавливает файлы проекта. | |
| // Присутствие файла "tsconfig.json" в папке указывает TypeScript, что это корневая папка проекта. | |
| // Внутри "tsconfig.json" указываются настройки компилятора TypeScript и корневые файлы проекта. | |
| // Программа компилятора "tsc" ищет файл "tsconfig.json" сначала в папке, где она расположена, затем поднимается выше и ищет в родительских папках согласно их вложенности друг в друга. | |
| // Команда "tsc --project C:\path\to\my\project\folder" берет файл "tsconfig.json" из папки, расположенной по данному пути. | |
| // Файл "tsconfig.json" может быть полностью пустым, тогда компилятор скомпилирует все файлы с настройками заданными по умолчанию. | |
| // Опции компилятора, перечисленные в командной строке перезаписывают собой опции, заданные в файле "tsconfig.json". |
| /* | |
| The MIT License | |
| Copyright (c) Jeff Hansen 2018 to present. | |
| Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: | |
| The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. | |
| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION W |
| // load-route-data.js | |
| import { matchPath } from 'react-router-dom'; | |
| export default (dispatch, pathname, routes, query) => { | |
| const promises = []; | |
| routes.some(route => { | |
| const match = matchPath(pathname, route); |
| const EXTENSION_TYPE = { | |
| 0x01: 'PlainText', | |
| 0xF9: 'GraphicControl', | |
| 0xFE: 'Comment', | |
| 0xFF: 'Application' | |
| }; | |
| /** | |
| * Returns total length of data blocks sequence | |
| * |
| const puppeteer = require('puppeteer'); | |
| (async () => { | |
| const browser = await puppeteer.launch(); | |
| const page = await browser.newPage(); | |
| // Adjustments particular to this page to ensure we hit desktop breakpoint. | |
| page.setViewport({width: 1000, height: 600, deviceScaleFactor: 1}); | |
| await page.goto('https://www.chromestatus.com/samples', {waitUntil: 'networkidle'}); |
Javascript is a programming language with a peculiar twist. Its event driven model means that nothing blocks and everything runs concurrently. This is not to be confused with the same type of concurrency as running in parallel on multiple cores. Javascript is single threaded so each program runs on a single core yet every line of code executes without waiting for anything to return. This sounds weird but it's true. If you want to have any type of sequential ordering you can use events, callbacks, or as of late promises.
| Backup: | |
| docker exec -t -u postgres your-db-container pg_dumpall -c > dump_`date +%d-%m-%Y"_"%H_%M_%S`.sql | |
| Restore: | |
| cat your_dump.sql | docker exec -i your-db-container psql -Upostgres |
| 'use strict'; | |
| class Abstract { | |
| // A static abstract method. | |
| static foo() { | |
| if (this === Abstract) { | |
| // Error Type 2. Abstract methods can not be called directly. | |
| throw new TypeError("Can not call static abstract method foo."); | |
| } else if (this.foo === Abstract.foo) { | |
| // Error Type 3. The child has not implemented this method. | |
| throw new TypeError("Please implement static abstract method foo."); |
