摘要：
Creational patterns provide object creation mechanisms that increase flexibility and reuse of existing code. Factory method: Provides an interface for 阅读全文
摘要：
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
摘要：
Blog: https://www.geeksforgeeks.org/es6-trampoline-function/ Stackoverflow problem for recursion: const sumBelow = (number, sum = 0) => ( number 0 ? s 阅读全文
摘要：
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
摘要：
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
摘要：
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
摘要：
In our previous code, we have seen this partten for operators: // #region operators const concat = curry((broadcaster, listener) => { let string = ''; 阅读全文
该文被密码保护。 阅读全文
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
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
摘要：
vim cheat sheet Keep this handy as you experiment with vim: http://www.fprintf.net/vimCheatSheet.html Here is another guide that covers the commands i 阅读全文
摘要：
We start with three interface types: User, Organisation, and Product. These types share common properties: id, name, and imageId, but each also posses 阅读全文
摘要：
One common question is whether to use type or interface in TypeScript. To clarify the difference, type can represent anything, including objects, wher 阅读全文
摘要：
You don't really need to apply a really complex regex for one validation, instead you can combine multi regex together to fulfilll the task. const reg 阅读全文
摘要：
You cannot assign anything to never, except for never itself. // red squiggly lines under everything in parens fn("hello"); fn(42); fn(true); fn({}); 阅读全文
摘要：
https://github.com/microsoft/vscode-docs/blob/vnext/release-notes/v1_46.md#add-all-missing-imports-source-action 阅读全文
摘要：
declare const tag: unique symbol; export type EmptyObject = { [tag]?: never }; // Record<PropertyKey, never> const acceptOnlyEmptyObject = (input: Emp 阅读全文
摘要：
const acceptAnythingExceptNullOrUndefined = <T>(input: {}) => {}; acceptAnythingExceptNullOrUndefined('hello'); acceptAnythingExceptNullOrUndefined(42 阅读全文
摘要：
Any time when you have non-primitive type, it's going to be removed from memory anytime if it is no longer needed. class Test { constructor(name) { th 阅读全文
摘要：
Video: https://www.youtube.com/watch?v=PkFuytYVqI8&list=WL&index=67 body └─ article.feature ├─ section.article-hero │ ├─ h2 │ └─ img │ ├─ section.arti 阅读全文