11 2019 档案

摘要://If you know a solution is not far from the root of the tree: BFS, because it is faster to get closer node //If the tree is very deep and solutions are rare: BFS, DFS will take a longer time becau... 阅读全文
posted @ 2019-11-29 16:33 Zhentiw 阅读(186) 评论(0) 推荐(0) 编辑
摘要:<!DOCTYPE html> <html> <head> <title>Parcel Sandbox</title> <meta charset="UTF-8" /> <!-- Load TensorFlow.js --> <script src="https://cdn.jsdelivr.net 阅读全文
posted @ 2019-11-26 17:39 Zhentiw 阅读(403) 评论(0) 推荐(0) 编辑
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posted @ 2019-11-26 04:15 Zhentiw 阅读(2) 评论(0) 推荐(0) 编辑
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posted @ 2019-11-26 03:26 Zhentiw 阅读(2) 评论(0) 推荐(0) 编辑
摘要:When to use describedby: For example you have a close button: When to use labelledby: For example you have Billing section, inside you have address fi 阅读全文
posted @ 2019-11-25 17:59 Zhentiw 阅读(568) 评论(0) 推荐(0) 编辑
摘要:SQL databases are commonly used to store data; for example - your application could store user profile information in a database. Yous should never cr 阅读全文
posted @ 2019-11-25 04:19 Zhentiw 阅读(125) 评论(0) 推荐(0) 编辑
摘要:Image is quite heavy in web traffic. it is about 53% whole web traffic. It is important to make sure loading image won't be a slow & bad experience to 阅读全文
posted @ 2019-11-22 20:46 Zhentiw 阅读(287) 评论(0) 推荐(0) 编辑
摘要:In this lesson, we will be going over the attribute aria-expanded. Instead of using a class like .open we are going to use the aria-expanded attribute 阅读全文
posted @ 2019-11-22 17:05 Zhentiw 阅读(168) 评论(0) 推荐(0) 编辑
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posted @ 2019-11-22 03:48 Zhentiw 阅读(2) 评论(0) 推荐(0) 编辑
摘要:For multi pages application, it is very slow to navgiate between page by page, because it needs to reload the full page. Portal can solve the problem 阅读全文
posted @ 2019-11-21 19:21 Zhentiw 阅读(256) 评论(0) 推荐(0) 编辑
摘要:The prefers-reduced-motion CSS media feature is used to detect if the user has requested that the system minimize the amount of animation or motion it 阅读全文
posted @ 2019-11-21 18:47 Zhentiw 阅读(412) 评论(0) 推荐(0) 编辑
摘要:VSCode Themes are a quick way to update the color scheme and syntax highlighting of your code, but you might find your favorite theme isn't quite perf 阅读全文
posted @ 2019-11-20 16:06 Zhentiw 阅读(192) 评论(0) 推荐(0) 编辑
摘要:There is pretty good talk about performacne https://www.youtube.com/watch?v=puUPpVrIRkc It targets the low end device or poor network connection. Serv 阅读全文
posted @ 2019-11-19 20:39 Zhentiw 阅读(123) 评论(0) 推荐(0) 编辑
摘要:const kOtherBubblePointer = BorderRadius.only( topRight: Radius.circular(30), bottomLeft: Radius.circular(30), bottomRight: Radius.circular(30), ); co 阅读全文
posted @ 2019-11-16 02:49 Zhentiw 阅读(195) 评论(0) 推荐(0) 编辑
摘要:Let's say you set widget height to 200, but to different screen, there might not be enough space for the widget to display, in this case, you can use 阅读全文
posted @ 2019-11-16 02:21 Zhentiw 阅读(158) 评论(0) 推荐(0) 编辑
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posted @ 2019-11-16 02:18 Zhentiw 阅读(1) 评论(0) 推荐(0) 编辑
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posted @ 2019-11-16 01:58 Zhentiw 阅读(2) 评论(0) 推荐(0) 编辑
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posted @ 2019-11-14 04:19 Zhentiw 阅读(3) 评论(0) 推荐(0) 编辑
摘要:const isPromise = obj => Boolean(obj) && typeof obj.then 'function'; This can be a tool save into your toolbox. 阅读全文
posted @ 2019-11-13 21:40 Zhentiw 阅读(324) 评论(0) 推荐(0) 编辑
摘要:JavaScript is single-threaded, which can present some problems when creating an interactive user experience. If JavaScript runs too long while a user 阅读全文
posted @ 2019-11-13 21:01 Zhentiw 阅读(157) 评论(0) 推荐(0) 编辑
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posted @ 2019-11-13 04:19 Zhentiw 阅读(1) 评论(0) 推荐(0) 编辑
摘要:It is recommended to use 'slice' over 'Array'. An array variable denotes the entire array; it is not a pointer to the first array element (as would be 阅读全文
posted @ 2019-11-12 15:52 Zhentiw 阅读(110) 评论(0) 推荐(0) 编辑
摘要:Anroid Firebase Project setup: 1. In firebase console, cerate a Android app setup you can find in code: Find "applicationId", undef "defaultConfig", p 阅读全文
posted @ 2019-11-10 21:31 Zhentiw 阅读(371) 评论(0) 推荐(0) 编辑
摘要:Docs Mixins are a way of reusing a class’s code in multiple class hierarchies. 阅读全文
posted @ 2019-11-05 21:06 Zhentiw 阅读(173) 评论(0) 推荐(0) 编辑
摘要:window.matchMedia() allow to listen to browser window size changes and trigger the callback for different media query size. you can attach a listener 阅读全文
posted @ 2019-11-05 17:10 Zhentiw 阅读(322) 评论(0) 推荐(0) 编辑
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posted @ 2019-11-05 04:04 Zhentiw 阅读(2) 评论(0) 推荐(0) 编辑
摘要:Before we publish our package, we want to make sure everything is set up correctly. We’ll cover versioning, preparing our package, adding a proper REA 阅读全文
posted @ 2019-11-04 16:54 Zhentiw 阅读(184) 评论(0) 推荐(0) 编辑
摘要:TO debug NestJS code with Chrome dev tool, we can run: TO make it easier for us running this later, we can do: After running this script, you cannot s 阅读全文
posted @ 2019-11-04 15:59 Zhentiw 阅读(1016) 评论(0) 推荐(0) 编辑
摘要:Animation can be a powerful way to enhance a user experience. In this lesson, we'll walk through the creation of a card-flip animation, creating a nic 阅读全文
posted @ 2019-11-01 20:31 Zhentiw 阅读(213) 评论(0) 推荐(0) 编辑
摘要:Similar to writing a custom State Hook, we’ll write our own Effect Hook called useStarWarsQuote, which returns a random quote and a loading state. Rem 阅读全文
posted @ 2019-11-01 20:22 Zhentiw 阅读(245) 评论(0) 推荐(0) 编辑

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