React Hook - use these 9 hooks to be invincible
React Hook guideWhat is Hook?Hook is a new feature of React 16.8. It allows you to use state and other React features without writing class es.Hook is essentially a function. It simplifies components and has its own state management, life cycle management and state sharing.useState
useEffect
useContext
useReducerWhat did Hook solve?State reuse ...
Added by The_Stranger on Tue, 15 Feb 2022 05:57:33 +0200
Minimum spanning tree and bipartite graph in graph theory (acwing template)
Directory navigation:
Minimum spanning tree:
For a graph with n points, the edges must be greater than or equal to n − 1. The minimum spanning tree is to select from these edges
N-1 edges connect all n points, and the sum of edge weights of these n − 1 edges is the smallest of all schemes
One more thing:
There are n ...
Added by Crave on Tue, 15 Feb 2022 05:56:21 +0200
Explain in detail the process of realizing Chinese text classification by CNN
Abstract: This paper mainly explains the process of realizing Chinese text classification by CNN, and compares it with Bayesian, decision tree, logistic regression, random forest, KNN, SVM and other classification algorithms.
This article is shared from Huawei cloud community< [Python artificial intelligence] 21 Detailed explanation of Wo ...
Added by snowplank on Tue, 15 Feb 2022 05:46:02 +0200
Understanding of JavaScript objects
Understanding of JavaScript objectsobjectUnderstanding objectECMA-262 defines an object as "a collection of unordered attributes whose attributes can contain basic values, objects or functions." Strictly speaking, this is equivalent to saying that an object is a set of values without a specific order. Each property or method of an obj ...
Added by Sinemacula on Tue, 15 Feb 2022 05:44:00 +0200
56. The core principle of Flutter - Flutter startup process and rendering pipeline
start-up
The entry of FLUENT is in the main() function of "lib/main.dart", which is the starting point of dart application. In the Flutter application, the simplest implementation of the main() function is as follows:
void main() => runApp(MyApp());
You can see that the main() function only calls one runApp() method. Let's see ...
Added by gypmaster on Tue, 15 Feb 2022 05:39:57 +0200
7 - visual control base class QWidget
7 - QWidget
QWidget VS QObject
QObject is not a visual control, but the base class of all QT objects.
Qwidget is the base class of all visual controls.
(1) Description
The base class of all visual controls (only common to all visual controls, such as a square, resizable, moving position, etc.); Is the simplest blank control; Control is ...
Added by Swerve1000 on Tue, 15 Feb 2022 05:31:36 +0200
How is the mask effect achieved in the LPL Ban/Pick selection stage?
Recently, the S11 LPL spring competition started. In the process of watching the competition, I found a new and interesting mask effect in the Ban/Pick selection stage of the new season, as shown in the following figure:Of course, it is a dynamic effect. In the process of selecting a candidate, there will be a breathing effect:The Gif image is ...
Added by burhankhan on Tue, 15 Feb 2022 05:30:37 +0200
Take you ten days to easily handle the Go micro service series
At the beginning of this article, we will publish a series of articles to show you a go zero micro service example in detail. The whole series is divided into ten articles, and the directory structure is as follows:Environment construction (this article)Service splittingUser servicesProduct serviceOrder servicePayment servicesRPC service Auth a ...
Added by robsgaming on Tue, 15 Feb 2022 05:26:15 +0200
Basic use of ES Module
ES Module
The blogger will continue to update various front-end technologies. If you like, you can pay attention to, collect and praise the blogger's articles.
Basic characteristics of ES Module
ESM automatically adopts strict mode and ignores' use strict 'Each ES Module runs in a separate private scopeESM requests external JS modules throug ...
Added by nitroxman on Tue, 15 Feb 2022 05:25:41 +0200
Message queue -- six working modes of RabbitMQ
Message queuing - six working modes of RabbitMQ:
1, Simple mode:
1. Simple mode:
There are no switches in the simple mode broker, only queues.
2. Related concepts:
⚫ P: The producer is the program that sends the message ⚫ C: Consumer: the receiver of the message will always wait for the message to arrive ⚫ Queue: message queue, ...
Added by sheffrem on Tue, 15 Feb 2022 05:07:13 +0200