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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
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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
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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
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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
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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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并发 并发 英语为 Concurrency 指的是在同一时间段内，多个任务交替进行。这些任务没有真正同时运行，而是通过任务切换来营造“同时进行”的效果。 类比：一个服务员同时负责 3 桌客人，他会先给 A 桌上菜，再去 B 桌点单，然后回到 C 桌加水……看起来好像在同时照顾三桌，其实是快速切换任务 阅读全文
posted @ 2026-02-10 14:58
Zhentiw
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节点的本质就是一个函数，这个函数可以是同步的，也可以是异步的，该函数会自动被框架包装成 RunnableLambda。 1. RunnableLambda LangChain 提供的一种轻量级工具，它能把普通函数封装成符合 Runnable 接口规范的实例，从而让该函数能够无缝参与到 LCEL 的链 阅读全文
posted @ 2026-02-10 14:29
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While iframe-based UI components provide rich, visual interfaces, they need a way to communicate back to the host application to trigger actions, requ 阅读全文
posted @ 2026-02-09 14:32
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二进制基础知识 1. 二进制表示数 一个格子 --> bit(位)：计算机中最小的存储单位 2 个bit 种类数：22 = 4 数的范围：0～3（0～22 - 1） 8 个 bit 一组：byte：计算机中最小的访问单位 种类数：28 = 256 数的范围：0～255（0～28 - 1） 2. 反码 阅读全文
posted @ 2026-02-09 14:07
Zhentiw
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Zod v4 + Schema Metadata + Reducer-Based State Compilation This is a single, self-contained learning note. It explains why LangGraph works, how the in 阅读全文
posted @ 2026-02-06 15:25
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Users expect iframes to fit their content perfectly, not waste space or require scrolling. The journal viewer should automatically adjust to show exac 阅读全文
posted @ 2026-02-02 14:38
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When iframes load in AI chat, the host application doesn't know when they're ready to receive data or handle interactions. Without this handshake, use 阅读全文
posted @ 2026-02-02 14:23
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While raw HTML and Remote DOM provide great ways to create UI components, they have limitations when it comes to building truly complex, interactive a 阅读全文
posted @ 2026-01-30 15:03
Zhentiw
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While raw HTML gives us visual interfaces, it has limitations when it comes to creating truly interactive and consistent user experiences. Raw HTML re 阅读全文
posted @ 2026-01-29 14:53
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MCP UI enables servers to send rich, interactive user interfaces along with their responses, transforming AI chat from text-only interactions into vis 阅读全文
posted @ 2026-01-29 14:51
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