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467 views

1 answer

Cannot accept SDK Licenses for android SDK in Flutter

This is my first time running Flutter as I am looking to get started with it. When I try to configure it my apps ... When I Try To Accept Licenses How do I fix this exception?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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488 views

1 answer

nginx配置问题为什么加上www跳转不过去呢？

输入domain.top可以跳转到https://domain.top 但是输入www.domain.top却跳转不到https://domain.top怎么办？这个应该怎么配置呢？就是想统一跳转 ... /www/html/domain'; root $root_path; index index.php index.html index.htm; }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

419 views

1 answer

backpropagation - Neural network: How to calculate the error for a unit

I am trying to work out question 26 from this exam paper (the exam is from 2002, not one I'm getting marked on!) This is the ... (x)) ...but then I got stuck, if anyone has an idea...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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291 views

1 answer

java如何从云服务器上下载文件

将java项目打成war包后放到服务器上，使用文件下载功能的时候在本地的时候没问题，部署到服务器上就提示找不到路径，上传的目录是在webapp下，服务器上的路径要怎么获取啊。...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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415 views

1 answer

流式处理因子计算的时候，怎么做到并行计算因子

关于因子计算假定我要计算100个因子每个因子耗时10毫秒加起来就耗时1秒这种情况怎么设计才能减少总的时间? 应用场景是接收行情、写入streamTable、计算因子、下发因子数据，怎么实现比较好？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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209 views

1 answer

base64转blob为什么要去掉base64中的后两位

以下是网上抄的代码 function dataURLtoBlob(dataurl) { const arr = dataurl.split(','); //注意base64的最后面中括号和引号是不转译的 const _arr = arr[1].substring(0, arr ... 而是不确定的两位字符. 已知遇到过的情况有: "==" "I=" "CC"...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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582 views

1 answer

Netty http客户端无法接收到服务器的响应信息

这是我的客户端的Handler代码 class RobotHandler : ChannelInboundHandlerAdapter() { private val logger = LoggerFactory.getLogger(this.javaClass) override ... 触发Controller但是无法接收到返回的消息，请问怎么解决...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

414 views

1 answer

vue如何修改js中的getBoundingClientRect方法

我想在vue项目里加一个滚动时间轴，找到一个好看的JavaScript版本的，想自己动手修改成vue的，但是出来这个报错 <script> export default { name: 'info', data(){ return{ el:null } }, ... 关代码粘贴代码文本（请勿用截图）你期待的结果是什么？实际看到的错误信息又是什么？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

348 views

1 answer

Redux State改变后Navigator怎么没自动渲染screen React Navigation 5

AppNav.js import React, {useState, useEffect} from 'react'; import {NavigationContainer} from '@react- ... combineReducers({ user: userReducer }) export default rootReducer...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

762 views

1 answer

war - Can springdoc be used with spring webflux non boot application

We have a spring webflux reactive application that needs to be deployed as war on server. The spring boot ... ? Is springdoc compatible with non spring boot webflux application?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

473 views

1 answer

生产环境中，面向用户的app请求来时网关超时设为多大比较合理

生产环境中，面向用户的app请求来时网关超时设为多大比较合理,超时之后熔断给用户返回超时警告或者默认值、页面内部服务之间的调用超时呢?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

435 views

1 answer

table数据渲染失败

用的koa+vue+mongoose搭建的项目，post向数据库提交数据，然后通过get渲染到前端。报错：代码和数据： post数据：服务端代码打印的数据：前端代码：求问怎么样让前端得到数组数据呢...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.0k views

1 answer

3d - Argument is missing while trying to add surface (R)

I am trying to run these functions to establish a 3D plot and I want to add a plane but an error occurs. plot_ly(data ... is missing, with no default What should I do to fix this?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

346 views

1 answer

过滤器和拦截器拦截了不该拦截的路径

过滤器设置只拦截某些路径，在本地测试没问题，但是部署到服务器之后，却拦截了所有路径。我关闭过滤器，改成使用拦截器，居然也有这种问题，在本地测试只拦截部分路径，一到服务器上就拦截了所有路径，不知道啥原因...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

290 views

1 answer

mycat启动后CPU一直上升，CPU占用率达90+%

mycat版本：1.6.7.5-release wrapper.conf #************************************************** ... "0" writeType="0" dbType="mysql" dbDriver="native" switchType="1" slaveThreshold="100">...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

291 views

1 answer

axios请求获取数据前，使用v-if判断div显示出现闪烁

我在data中默认定义了一个isEnd为false 然后axios请求数据，再修改isEnd 但是请求获得数据前有一瞬，那个nomore组件总是会出现再消失，如果网速慢一点还会更明显，有没有什么办法呀...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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438 views

1 answer

把“男：XXX女：XXXX男：XXX男：XXX女：XXXX”这种形式的字符串转变成数组

我想把“男：XXX女：XXXX男：XXX男：XXX女：XXXX”这种形式的字符串转变成 array(['sex'=>'男','content'=>''XXX],['sex'=>'女','content'=>''XXX],…)这种形式的数组，有什么好的思路么？...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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300 views

1 answer

stylus全局变量怎么使用

stylus全局变量怎么使用...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

291 views

1 answer

rust - How does ownership of variables work between iterations?

I am trying to learn rust and thought of implementing a linked list as a practice problem to understand Ownership/Borrow ... the error (2) Is my implementation the best way?...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

589 views

1 answer

typescript 引入react-cropper插件报错

我大概知道是没有声明文件的原因，该怎么写声明文件了 avatar.tsx import React, { Component } from 'react'; import 'cropperjs/dist/cropper.css'; import ... <br style={{ clear: 'both' }} /> </div> ); } }...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

221 views

1 answer

base64转blob为什么要去掉base64中的后两位

以下是网上抄的代码 function dataURLtoBlob(dataurl) { const arr = dataurl.split(','); //注意base64的最后面中括号和引号是不转译的 const _arr = arr[1].substring(0, arr ... 而是不确定的两位字符. 已知遇到过的情况有: "==" "I=" "CC"...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

432 views

1 answer

Django 中MEDIA_URL、MEDIA_ROOT 等都设置正确，输入正确的URL 图片不显示？

问题描述 Django 中MEDIA_URL MEDIA_ROOT 等都设置正确，输入正确的URL 图片不显示？相关代码配置 # settings 配置 TEMPLATES = [ { 'BACKEND': ' ... ,{'document_root':settings.MEDIA_ROOT},name='media'), 屏蔽掉,致使图片无法显示...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

432 views

1 answer

vue cli4脚手架创建失败

感觉vue真的好无语最基本的下载都各种问题环境如下 $ vue -V @vue/cli 4.3.1 $ npm -v 6.13.4 which.js: ... vue-admin PS C:UsersAdministratorDesktopvue-admin> npm run server npm ERR! missing script: server...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

383 views

1 answer

reactjs - Rendering App.tsx class in Another Component

Hi guys here is my project setup of react with typescript index.ts import React from "react"; import { BrowserRouter } ... thing like <Provider {...rootStore}> except (index.tsx)...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

283 views

1 answer

c++ - the memory is released when passing to unordered_map by rvalue

I bulit it with -std=c++17 and tried both g++ and clang++ such as clang++ -std=c++17 <file>. It showed the same results. ... first not? Edit1: clang version 7.1.0 g++ (GCC) 9.3.0...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

302 views

1 answer

amazon web services - How do I manage subscriptions with AppSync when response to a mutation is received by another lambda function?

The data flow of my app is as follows React Native app -> AWS Lambda -> Neo4J DB (hosted on EC2) -> ... the reponse to a mutation received by another lambda function. Thanks Sachin...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

425 views

1 answer

python - How can I create a rectangle using numbers and asterisks symbol?

Output should be like this : 1***** 12**** 123*** The code I tired has given below. But I didn't get my the desired ... 1, j-i): print("*",end="") print() show_rectangle(n,x)...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

330 views

1 answer

vue项目中，import()动态的话就会报错

const value = await import(packages/${packageModule}/router) 会报。有大佬碰到过吗？我node是v10.20.0,npm是6.14.4 每个都试过了，后面3个一起上还是不行，报一样的错...

asked Jan 29, 2021 in Technique[技术] by 深蓝 (71.8m points)

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