Tag：function
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Time：2021-8-2
The C + + standard library does not provide the so-called date type. C + + inherits the structures and functions of C language for date and time operations. In order to use date and time related functions and structures, they need to be referenced in C + + programsHeader file. There are […]
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Time：2021-8-2
PHP sprintf function is a very powerful function. This article specifically records the usage of the sprintf function in PHP to format strings. Definition and Usage The sprintf () function writes the formatted string to a variable. grammarsprintf(format,arg1,arg2,arg++) Parameter descriptionFormat is required. Convert format.Arg1 is required. Specifies the parameter inserted at the first% symbol in […]
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Time：2021-8-2
Based on the user’s feedback on the use of startup analysis indicators, Youmeng + u-apm officially launched the [startup analysis] function based on its strong technical ability, which aims to help developers monitor the startup trend of Android and IOS applications and evaluate the performance of applications. The application performance monitoring platform u-apm is in […]
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Time：2021-8-2
<!– Scala, a “maverick” language! — > It’s hard not to touch Scala on the way to spark. Scala seems to provide a lot of “functional programming like” syntax candy for Java. Here are some unique parts of the language to share with readers. Reference materials mainly include: Cao Jie. Spark big data analysis technology […]
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Time：2021-8-2
I don’t know if you have seen such news before: IOS 14.5 has added the application tracking transparency privacy function. With this function, users’ privacy information will not be leaked, which can effectively block the push of accurate advertising. This function is happy for users and a disaster for advertisers. Losing the ocean of big […]
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Time：2021-8-2
PS: if you want to reprint, please indicate the source. I own the copyright. PS: This is only based on my own understanding, If it conflicts with your principles and ideas, please understand and do not spray. Pre description This article serves as a backup of my CSDN blog’s master site（ BlogID=102） Environmental description Ubuntu […]
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Time：2021-8-2
1. HTML and CSS HTML5 added tags and attributes Add label: 1. Structure label (1) Section: independent content block, which can be used to form an outline with H1 ~ H6 to represent the document structure, and can also have chapters, headers, footers or other parts of headers; (2) Article: special independent block, which represents […]
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Time：2021-8-2
introduce A front and back separated personal blog based on Vue + node.js + mongodbAddress: https://github.com/xmie233/vu…Welcome to star. Thank you first~ environment vue-cli 4.5.0 node.js 14.16.0 mongodb 4.4.5 Technology stack Front end: Vue cli, Vue router, vuex, Axios, bootstrapBack end: node.js, mongodb, express major function Front desk: article details, article list, article classification, article search, […]
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Time：2021-8-2
import { Injectable } from ‘@angular/core’; import { Subject } from ‘rxjs’; @Injectable({ providedIn: ‘root’ }) export class GlobalEvent { /**Store the last value of the event*/ private _datas = {}; private _data$ = new Subject<EventInfo>(); private _dataFlow$ = this._data$.asObservable(); private _subscriptions: Map<GlEvenName, { [id: string]: Function[] }> = new Map(); constructor() { this._dataFlow$.subscribe((data: EventInfo) […]
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Time：2021-8-2
Problem: there are too many Ajax request codes sent once, and the request codes sent many times are redundant and repeated Solution: encapsulate the request code into the function and call the function when sending the request 1. Simple version function ajax(mether, url, callback, data, flag) { //Asynchronous or not, asynchronous by default flag = […]
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Time：2021-8-2
Webpack is a module packer. In its view, every file is a module. Whether you use the commonjs specification or ES6 module specification for development, the packaged files uniformly use the module specification customized by webpack to manage and load modules. This article will start with a simple example to explain the principle of webpack […]
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Time：2021-8-2
Author Jiang Yu preface Image classification is a hot topic in the field of artificial intelligence. Popular interpretation is an image processing method that distinguishes different types of targets according to their different characteristics reflected in the image information. It uses computer to quantitatively analyze the image, and classifies each pixel or region in the […]
