Zhentiw - 博客园

2018年10月21日

[Node.js] Read a File in Node.js with fs.readFile and fs.readFileSync

摘要： We'll read a csv file in node.js both synchronously, and asynchronously. The file we're reading is a plain text, utf8 file - but you can also use fs.r 阅读全文

posted @ 2018-10-21 03:18 Zhentiw 阅读(321) 评论(0) 推荐(0)

[Node.js] Write or Append to a File in Node.js with fs.writeFile and fs.writeFileSync

摘要： In node.js, you can require fs, and then call fs.writeFile with the filename, and data to write to that file (as a string or a buffer). That will over 阅读全文

posted @ 2018-10-21 03:13 Zhentiw 阅读(764) 评论(0) 推荐(0)

2018年10月20日

[Unit Testing] Mock an HTTP request using Nock while unit testing

摘要： When testing functions that make HTTP requests, it's not preferable for those requests to actually run. Using the nock JavaScript library, we can mock 阅读全文

posted @ 2018-10-20 04:00 Zhentiw 阅读(195) 评论(0) 推荐(0)

2018年10月19日

[Javascript] Use JavaScript's for-in Loop on Objects with Prototypes

摘要： Loops can behave differently when objects have chained prototype objects. Let's see the difference we get when we use the for-in loop on an object wit 阅读全文

posted @ 2018-10-19 19:53 Zhentiw 阅读(133) 评论(0) 推荐(0)

[Javascript] Understanding the .constructor property on JavaScript Objects

摘要： Constructor functions hold an interesting purpose in JavaScript. Unlike in classical languages, they do not always mean created by. In this lesson we’ 阅读全文

posted @ 2018-10-19 15:52 Zhentiw 阅读(142) 评论(0) 推荐(0)

[Rust] Load a WebAssembly Function Written in Rust and Invoke it from JavaScript

摘要： In this lesson we are going to setup a project from scratch by introducing the JavaScript snippet to load a WebAssembly module. We demonstrate two dif 阅读全文

posted @ 2018-10-19 02:36 Zhentiw 阅读(274) 评论(0) 推荐(0)

[Rust] Setup Rust for WebAssembly

摘要： In order to setup a project we need to install the nightly build of Rust and add the WebAssembly target. For an improved workflow we also install the 阅读全文

posted @ 2018-10-19 02:07 Zhentiw 阅读(308) 评论(0) 推荐(0)

2018年10月17日

[Javascript] Link to Other Objects through the JavaScript Prototype Chain

摘要： Objects have the ability to use data and methods that other objects contain, as long as it lives on the [prototype] chain. In this lesson we’ll test t 阅读全文

posted @ 2018-10-17 19:53 Zhentiw 阅读(161) 评论(0) 推荐(0)

2018年10月16日

[React] Use the Fragment Short Syntax in Create React App 2.0

摘要： create-react-app version 2.0 added a lot of new features. One of the new features is upgrading to Babel Version 7, which enables the Short Syntax of R 阅读全文

posted @ 2018-10-16 02:49 Zhentiw 阅读(176) 评论(0) 推荐(0)

2018年10月15日

[Bash] Search for Text with `grep`

摘要： In this lesson, we’ll use grep to find text patterns. We’ll also go over some of the flags that grep has that can be combined together to make it more 阅读全文

posted @ 2018-10-15 14:45 Zhentiw 阅读(201) 评论(0) 推荐(0)

Answer1215

公告