Tag: quest

[Thousand-question case] TypeScript gets the distance between two points | midpoint | supplementary point | vector | angle

When we write some functions such as aiming, drawing, and erasing, we often encounter the calculation of some parameters between two points, so this article will talk about a series of parameter calculations between two points. Directory 1 The distance between two points ① Implementation principle ② Code implementation and results 2 Midpoint between two […]

SpringBoot integrates Logback+ MDC request tracking + EvaluatorFilter to write Java code filtering

Article directory SpringBoot integrates Logback + MDC request tracking + EvaluatorFilter to write Java code filter conditions Introduce dependencies logback-dev.xml configuration file application.yml configuration Configure the MDC filter Configure the filter order (the order of using annotations in Filter sometimes fails) Run the project to display the log results SpringBoot integrates Logback + MDC request […]

Java implements the Session class similar to the python requests package, and automatically manages cookies.

1. In py, the requests.post() and get() functions automatically generate an instance of the Session class inside that function, so if the requests, post and get functions want to do things that can only be done after logging in, they need to be added cookie or write the cookie in the headers. If you want […]

Use XMLHttpRequest to read and manipulate svg graphs in vue (control dom flickering)

<template> <div class=”this_bk”> <div id=”svgTemplate” ref=”svg”></div> </div> </template> <script> import wftSvg from “@/assets/svg/xxmap.svg”; export default { data() { return { svgDom: null, allDom: null, } }, created() { this. getSvg(); }, mounted() { // svg mouse scroll event window[‘havcZooming’] = (e) => { console.log(e, ‘havcZooming—–>>>’) this. zoomimg(); } }, methods: { getSvg() { let _this […]

JavaScript Interview Questions(2)

1. If we want to return the character from a specific index which method is used? The JavaScript string charAt() method is used to find out a char value present at the specified index. The index number starts from 0 and goes to n-1, where n is the length of the string. The index value […]

[Three thousand questions about spring things] Spring configures multiple data sources vs. adding thing management to multiple data sources

There is a difference between configuring multiple data sources in Spring and adding transaction management to multiple data sources. If you only need to use multiple data sources and do not need to manage things, you can do simple processing. Configure multiple data sources in Spring It is relatively easy to configure multiple data sources […]

Python’s various network request libraries urllib3 requests aiohttp request http and https efficiency comparison, multi-threading, gevent, asyncio comparison, super large thread pool, 2n + 1 thread pool comparison…

The three purposes of this article are not to go astray by just obsessing with concepts. Some people think that there is a set of concepts, but in fact it is not what they think. This article uses various network request libraries, various concurrency modes, and thread pools of various sizes to test 50,000 requests […]