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Creational patterns provide object creation mechanisms that increase flexibility and reuse of existing code. Factory method: Provides an interface for 阅读全文
posted @ 2024-01-23 15:11
Zhentiw
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Just for fun... Given a number (always positive) as a type. Your type should return the number decreased by one. For example: type Zero = MinusOne<1> 阅读全文
posted @ 2022-10-07 22:57
Zhentiw
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Blog: https://www.geeksforgeeks.org/es6-trampoline-function/ Stackoverflow problem for recursion: const sumBelow = (number, sum = 0) => ( number 0 ? s 阅读全文
posted @ 2022-08-18 14:32
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Serverless framework with AWS Link to each sections Table of Content: Part 0: Serverless Project structure Part 1: DynamoDB & ApiGateway Part 2: Event 阅读全文
posted @ 2021-05-17 15:15
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Storage Services: S3 Glacier CloudFront Elastic Block Store (EBS) Storage Gateway Snow family Database Overview Block storage: Used on local networks 阅读全文
posted @ 2021-03-15 03:06
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S3 Features Prefiees and delimiters For example: the file name in S3 can be: `marking/plans/kpi_2021_1.pdf`. The point is make it looks like a folder 阅读全文
posted @ 2021-03-12 17:34
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In our previous code, we have seen this partten for operators: // #region operators const concat = curry((broadcaster, listener) => { let string = ''; 阅读全文
posted @ 2020-10-25 21:54
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该文被密码保护。 阅读全文
posted @ 2020-05-07 18:22
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Generators can yield promises which can work with the "for await of" loop syntax. This lesson shows how all the pieces fit together and explains why t 阅读全文
posted @ 2020-03-22 02:59
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In this post, we are going to see how to use Ramda Lens. For example, we have data: R.lens: R.lens takes a getter and a setter: R.lensProp: There is a 阅读全文
posted @ 2019-02-24 20:12
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Just like the State ADT an Array is also an Applicative Functor. That means we can do the same tricks with liftA2 with Array that we have been doing w 阅读全文
posted @ 2019-01-16 16:30
Zhentiw
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Use custom Cypress command for reusable assertions We’re duplicating quite a few commands between the registration and login of our user for assertion 阅读全文
posted @ 2018-12-06 21:13
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Use Cypress to test user registration Let’s write a test to fill out our registration form. Because we’ll be running this against a live backend, we n 阅读全文
posted @ 2018-12-05 15:54
Zhentiw
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Despite the fact that Cypress is an application that runs natively on your machine, you can install it and add it as a dependency just like all other 阅读全文
posted @ 2018-12-05 02:38
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Ensure Functions are Called Correctly with JavaScript Mocks Often when writing JavaScript tests and mocking dependencies, you’ll want to verify that t 阅读全文
posted @ 2018-11-06 04:25
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1. Color Picker (Chrome) You might know how to use color picker in Chrome, recently there is a feature inside color picker which is "Contrast Ratio", 阅读全文
posted @ 2018-07-15 18:41
Zhentiw
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We'll examine how to unnest function calls, capture assignment, and create a linear data flow with a type we call Box. This is our introduction to wor 阅读全文
posted @ 2016-12-11 21:47
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Well, this stuff will be a little bit strange if you deal with it first time. Container Object: Just a wrapper / contianer for values No Method No Nou 阅读全文
posted @ 2016-09-06 04:23
Zhentiw
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First, what is 'High Order function', basic just a function, inside the function return another fuction. For example: Decorators is a subset of high o 阅读全文
posted @ 2016-06-14 03:10
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Somehow it looks like reflect in Java. For example: We define an mothod on the Object, it called defineMethod(). It accepts two arguements, one is met 阅读全文
posted @ 2016-05-02 03:06
Zhentiw
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It can be a performance bottleneck if you frequently add/remove event listener bind to a DOM element. patchProps(el, key, prevValue, nextValue) { if ( 阅读全文
posted @ 2025-05-29 15:15
Zhentiw
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Brwoser support: https://caniuse.com/?search=%3Ahas <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="widt 阅读全文
posted @ 2025-05-27 19:43
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Browser support: https://caniuse.com/?search=clamp <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="wid 阅读全文
posted @ 2025-05-27 19:38
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Browser support: https://caniuse.com/css-text-wrap-balance <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" cont 阅读全文
posted @ 2025-05-27 19:35
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可扩展性是指系统、程序或技术架构在功能、规模及性能需求增加时，能够容易地增加其性能、容量和功能的能力。 示例 假设我们有一个国际化网站，我们希望根据用户选择的语言动态显示不同的内容，比如在网站首页展示一个欢迎语，不考虑扩展性，可能的实现方式如下： <!--Vue实现示例--> <template> 阅读全文
posted @ 2025-05-27 14:20
Zhentiw
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Browser support: https://caniuse.com/css-container-queries <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" cont 阅读全文
posted @ 2025-05-26 13:41
Zhentiw
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Browser support: https://caniuse.com/?search=Dynamic%20viewport%20units Dynamic viewport mainly resolve the issue of mobile web, due to mobile has flo 阅读全文
posted @ 2025-05-26 13:39
Zhentiw
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Browser support: https://caniuse.com/?search=aspect-ratio <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" conte 阅读全文
posted @ 2025-05-26 13:24
Zhentiw
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Brwoser support: https://caniuse.com/?search=Logical%20Properties%20 We want to achieve following effect, the first box, we applied writing-mode: vert 阅读全文
posted @ 2025-05-25 19:23
Zhentiw
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Browser support: https://caniuse.com/?search=writing <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="w 阅读全文
posted @ 2025-05-25 19:14
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