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Recent questions
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Java8 LocalDateTime 如何支持yyyy-MM-dd反序列化?
### 问题描述 想知道如何在以下场景中正确的使用LocalDateTime/LocalDate/LocalTime 项目前不久升级到Java8了, 新的业务模块都是采用Java8的语法或者API来实现, 比如Date这个对象, 在Java8中, ... 使用LocalDateTime编程感觉有些许 水土不服 , 不知道各位有无方法能帮助一下我, 感谢!...
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js 如何判断是否是ios设备?
这段代码有什么问题一直提示括号不匹配? var isiOS = !!u.match(/(i[^;]+;( U;)? CPU.+Mac OS X/);...
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求指点nodejs用request大量发送post总是出现ETIMEDOUT
因为业务问题需要一直查询数据库发送post给各个网站,然后明明对方网站能ping通,能访问,但是总是报超时连接错误,有没有大佬原因帮忙看看,愿意付费 入口 const db = require('./db/ ... function(err, rows, fields){ if(err){ rej(err); } res(rows); }) }) }, }...
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regex - How to prevent texts next to closed html tags using c#
To be as short as possible, I need to fetch plain text from HTML. Already researched a lot on the web, but non of ... next to the closed HTML element. Is there any way? Thanks....
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DolphinDB C++ API 编译报错 对‘SSL_CTX_free’未定义的引用
我根据教程在linux操作系统上使用DolphinDB C++ API 编译main.cpp的时候遇到这个问题: g++ main.cpp -std=c++11 -DLINUX -D_GLIBCXX_USE_CXX11_ABI=1 - ... /ABI0 -o main 依然报的一样的错误,C++API是今天刚从GitHub下载下来的...
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return 数据无法到函数上
如上图,为什么箭头函数中return不到最终函数呢?...
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255
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vue-cli4创建的项目中,静态图片无法显示
前言 对你来说,问题不难;所以请坚持看完 众人拾材火焰高,大胆给出你的想法,错了没关系,主要是要用 "路" 给出解决方法也行,能有理有据更好 ` 问题描述 TabBarItem 是自定组件;TabBarItem中有一个img标 ... 了没关系,主要是要用 "路" 给出解决方法也行,能有理有据更好 reference vue-cli HTML和静态资源处理...
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Jan 27, 2021
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python - Improve performance of events duration computation
I have a Pandas DataFrame that looks like that: ipdb> df[:4] name thread_id state time uuid 0 CB:Component_Loc 829946510 1 ... 0 minus time when state = 1) for each uuid. Thanks!...
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Jan 27, 2021
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在这能有机会得到一个前端大师成为我的mentor吗
没有具体的问题. 之前学习过Vue,能写一些页面了. 因目前在学习React,因项目时间紧.想快速学习进入状态. 但是有一些概念性问题 或者逻辑的理解不是到位. 如果每个问题拿出来问问题,又显得太琐碎. 同时对前端这些还是挺感兴趣的.所以未来还有不少问题和困难. 希望在这能找一位mentor. 可能你的三言二语就能帮助我尽快入门. 哪位兄弟姐妹可以帮忙吗?...
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javascript - Mongoose updateOne() going through okay but not updating
I have this request: // PUT that updates a user. router.put('/api/user/:id', async (req: Request, res: ... was using parameters to send the request. Thanks everyone for the help!...
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Jan 27, 2021
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javascript
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334
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node中readFile和writeFile的执行顺序
fs.readFile('./test.txt',(err,data)=>{ console.log('读取成功'); }) fs.writeFile('./test.txt','测试',(obj)=>{ console.log('写入 ... 运行会发现writeFile是异步执行的,但是为什么每次都是执行完writeFile再执行readFile~~~~...
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Spring Boot Security many connections open after just configuration
Hello my app is deployed into Heroku which has limited number of database connections (20). This is why I need to ... Thank you in advance. BEST ANSWER WILL BE MARKED AS ACCEPTED!...
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Jan 27, 2021
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Spring
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浏览器检查网站的时候:框架,扩展脚本,blob是什么?
我在使用浏览器的检查功能时候: 我们知道,一个网站的资源,可包括: html页面+css样式文件+js脚本+图片 这截屏里面对应的就是: 文稿+样式表+脚本+图像 那么其它的信息是什么呢(比如:框架,扩展脚本,blob)?...
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javascript - Why is the voiceschanged event fired on page load?
In Chrome, the voiceschanged is firing on page load, so I don't need to call the function that has speechSynthesis ... () method has changed (when the voiceschanged event fires.)...
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Jan 27, 2021
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django中app模块找不到
环境介绍 django verison=3.13, python version=3.9.0 因为要使用多个app,遂在项目目录下创建了apps这个文件夹放置其他app,在settings.py中也添加了系统路径,但问题就在这里,如下: ... 很正常的启动了 疑问??? 有没有人遇到这个问题的?Pathlib在被django解析的时候出问题了?...
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362
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electron在Mac OS下怎样实现下图效果?
我想要在Mac OS下实现绿色边框包裹全屏幕的效果,通过设置窗口尺寸等于屏幕的尺寸,只能把状态栏下方包进去,怎样才能把状态栏一块包进去?...
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Jan 27, 2021
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electron在Mac
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511
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windows安装pybluez报错
刚刚去微软官网看了看,原来是新版windows sdk把他删了,但是这样包都无法安装了,只能去改源代码了 删除了 irprops.lib 在此版本中,我们从 Windows SDK ... \VC\Tools\MSVC\14.28.29333\bin\HostX86\x64\link.exe' failed with exit status 1181...
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Jan 25, 2021
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525
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Flutter is using provider to load data is the right option?
So i have a situation where i make an request from the server for one widget. The widget is at the home page, lets ... the app reload or request data every time from db with cash...
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Jan 25, 2021
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Flutter
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557
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unity3d - Capsule collider effect for a custom kinematic player controller script
I am making a 2d platformer and I built my own script for player controller using raycasts. the player moves by using ... thankful for any ideas on how to implement such a script....
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Jan 24, 2021
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c++ - How to set tab based cookies in WebView2?
How can I set a cookie which would be applicable for just a specific tab in the browser ? Chrome keeps cookies separated for ... but i want to do that for every tab in normal mode....
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Jan 24, 2021
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c++
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406
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javascript - Pass data through promise .then notation using axios
I need to make three web service calls. The second two calls depend on the results of the first. Then I want to ... the chain so that I can resolve with all three data sets....
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Jan 24, 2021
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564
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为什么Vue项目运行在IE9中能显示,在IE10/11中白屏?
IE9能显示虽然样式是乱的,IE10/11完全是白屏 没有报错,网上搜索说白屏是ES6的问题,但是Vue脚手架预装了babel并且ie9为什么能运行呢? package.json: { "name": "test" ... .exports = { presets: [ '@vue/cli-plugin-babel/preset' ] } 没有其他配置文件了...
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Jan 24, 2021
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487
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element 树形组件使用问题
切换两个树形数据显示隐藏,默认展示orgTree 当切换到第二颗树的时候label不显示,数据没有问题,props设置正确。 下面是完整代码 有人知道这是什么BUG吗?...
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Jan 24, 2021
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python - Can I patch an arbitrary object instance to throw when used?
Motivation I have singleton objects I am replacing with new instances. I want to be sure that nobody ... overhead to normal object operations before make_radioactive is called...
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Jan 24, 2021
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Keyboard shortcuts not working on published extension, but working when loading unpacked developer extension?
I created keyboard shortcuts in my extension that worked while I was testing, but don't work when I ... docs/extensions/reference/commands/) these keyboard shortcuts should work....
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Jan 24, 2021
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Keyboard
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419
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flutter项目运行报错"variable 'originRect' is used"
Running pod install... 1.5s Running Xcode build... Xcode build done. 4.9s Failed to build iOS app Error output from Xcode build: ... : vscode device: ios 模拟器 新手学flutter,不知道怎么解决 ...
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flutter项目运行报错"variable
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713
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ant design vue 日期选择框如何设置结束时间不能小于开始时间
当用户选择开始的时间后,在结束时间中,开始的时间不能被选中.这样也行....
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Jan 24, 2021
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ant
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550
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vue实现mooc中课程中的类似ppt的模块
这个要怎么去实现呢?没有思路,求解!!!...
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Jan 24, 2021
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