Zhentiw - 博客园

2023年6月2日

摘要： button.addEventListener( 'click', (event) => { console.log('listener 1') queueMicrotask(() => { console.log('microtask') }) } ) button.addEventListene 阅读全文

posted @ 2023-06-02 20:59 Zhentiw 阅读(9) 评论(0) 推荐(0) 编辑

[Debug] Debug and inspect event listeners with Devtools

摘要： You can use getEventListeners(button)directly inside chrome devtool, but not inside application code. You can use monitorEvents(button, 'keydown'), no 阅读全文

posted @ 2023-06-02 20:51 Zhentiw 阅读(5) 评论(0) 推荐(0) 编辑

2023年5月31日

[Docker] Container communcation

摘要： For example you have two containers running Container A: need to talk to Container B Container B, running a node application export port 1337 From con 阅读全文

posted @ 2023-05-31 20:00 Zhentiw 阅读(6) 评论(0) 推荐(0) 编辑

2023年5月29日

[Rust] Borrow checker

摘要： Three rules: There can only be one value owner There can be unlimited immutable borrows (reference) with no mutable references There can be only one m 阅读全文

posted @ 2023-05-29 14:42 Zhentiw 阅读(31) 评论(0) 推荐(0) 编辑

2023年5月25日

[Javascript] Generator with example - 1

摘要： Difference between yieldand return returnset doneto true /** * Example 1 */ function* loggerator() { console.log("running"); yield "paused"; console.l 阅读全文

posted @ 2023-05-25 17:39 Zhentiw 阅读(2) 评论(0) 推荐(0) 编辑

2023年5月24日

[HTML 5] Detect visualViewport change

摘要： On mobile device, when you open / close the keyboard, zoom in / out, it might affect the visual viewport view (the actual page content); to detect cha 阅读全文

posted @ 2023-05-24 17:53 Zhentiw 阅读(14) 评论(0) 推荐(0) 编辑

[React Typescript] useRef with HTML Elements

摘要： React set the ref to null in runtime. It is a limitation now for react. import { useRef } from 'react'; export const Component = () => { const ref = u 阅读全文

posted @ 2023-05-24 15:11 Zhentiw 阅读(14) 评论(0) 推荐(0) 编辑

[Rust] Option vs Result

摘要： `Option` and `Result` are two very central enums in Rust, and they are used for error handling and for representing the absence of a value. Here is a 阅读全文

posted @ 2023-05-24 13:57 Zhentiw 阅读(65) 评论(0) 推荐(0) 编辑

[Rust] Handle Error

摘要： Typescript: import fs from "fs"; const fileName = process.argv[2]; if (fileName) { fs.readFileSync(fileName) .toString() .split("\n") .map((num) => pa 阅读全文

posted @ 2023-05-24 13:52 Zhentiw 阅读(12) 评论(0) 推荐(0) 编辑

[Rust] Option

摘要： Typescript: function practice(nums: number[], index: number): number { return (nums[index] ?? index) * 5 } In Rust: fn practice(nums: Vec<usize>, inde 阅读全文

posted @ 2023-05-24 01:24 Zhentiw 阅读(5) 评论(0) 推荐(0) 编辑

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