Zhentiw - 博客园

2020年3月15日

[Functional Programming] Function modelling -- 5. Endo Monoid

摘要： Endo: It takes a type as string and output is the same type. It's concat methods works like composion. All the transform functions on the same input. 阅读全文

posted @ 2020-03-15 18:10 Zhentiw 阅读(149) 评论(0) 推荐(0)

[HTML 5] Understanding DOM loading event & 'async', 'defer' keyword

摘要： There are two types of Loading events: DOMContentLoaded Loaded DOMEContentLoaded: It happens after index.html has been parsed. <!DOCTYPE html> <html> 阅读全文

posted @ 2020-03-15 02:57 Zhentiw 阅读(162) 评论(0) 推荐(0)

2020年3月14日

[Functional Programming] Function modelling -- 4. Reader Monda example

摘要： const Reader = run => ({ run, map: f => Reader(x => f(run(x))), chain: f => Reader(x => f(run(x)).run(x)), concat(o) { return Reader(x => run(x).conca 阅读全文

posted @ 2020-03-14 05:07 Zhentiw 阅读(151) 评论(0) 推荐(0)

[Angular] Understanding the Angular Component providers property

摘要： Let's say we have App.component.ts, it use provider inside component level: @Component({ selector: 'app-root', templateUrl: './app.component.html', st 阅读全文

posted @ 2020-03-14 04:37 Zhentiw 阅读(164) 评论(0) 推荐(0)

2020年3月13日

[HTML5] Correctly Define Heading Levels of a Web Page

摘要： Rules Each page should have at least one <h1> Pages should be structured in a hierarchical manner <h1>: being the most important (usually page titles 阅读全文

posted @ 2020-03-13 16:28 Zhentiw 阅读(120) 评论(0) 推荐(0)

[Functional Programming] Function modelling -- 3. Reader Monad

摘要： Reader Monad Continue with previous post, here we have some helper functions: const toUpper = s => s.toUpperCase(); const exclaim = s => `${s}!`; And 阅读全文

posted @ 2020-03-13 04:10 Zhentiw 阅读(227) 评论(0) 推荐(0)

[Functional Programming] 1. Function modelling -- Combine functions

摘要： Let's say we have two fucntions: const toUpper = s => s.toUpperCase(); const exclaim = s => `${s}!`; We want to combine those. But function itself doe 阅读全文

posted @ 2020-03-13 03:39 Zhentiw 阅读(150) 评论(0) 推荐(0)

2020年3月11日

[React] When to useReducer instead of useState

摘要： useState is typically simpler at first than useReducer (you can even implement useState using useReducer), but there's one scenario where useReducer i 阅读全文

posted @ 2020-03-11 17:56 Zhentiw 阅读(271) 评论(0) 推荐(0)

[Web component] Using Custom Events as a web component API

摘要： Learn how to use custom events to expose internal events from withing a web component. class MyWelcome extends HTMLElement { constructor() { super(); 阅读全文

posted @ 2020-03-11 16:31 Zhentiw 阅读(171) 评论(0) 推荐(0)

2020年3月10日

[Functional Programming] 2. Function modelling -- Validation

摘要： We want to write a Monoid, which able to take function called 'run', therefore we able to run a serial of functions together to get a combined result. 阅读全文

posted @ 2020-03-10 18:09 Zhentiw 阅读(192) 评论(0) 推荐(0)

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