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Recent questions
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社交应用中的双双匹配数据设计
背景 社交用户的双双匹配 男方A,女方B,通过基本信息和异性要求,如年龄,收入等,可以得出一个双方的匹配分值 匹配表结构如下 男方 女方 男方匹配女方分数 女方匹配男方分数 A B 99 89 已知问题 现在用户量10W,匹配表数据 ... 速度而已 希望解决 1.不知道有没有架构或者体系,能够解决以上问题 2.考虑过MYSQL的空间索引,但是不知道如何结合...
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请问前端如何实现分布加载?
像下图这种加载要怎么实现呢,数据还没有出来的时候先有个默认的样式?...
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webpack加载css字符串如何压缩?
需求:把css文件中的内容传给后端 目前的做法:通过raw-loader加载css文件,!!raw-loader!test.css 但是这样话得到的css字符串并没有被压缩,有没有什么更好的办法?...
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echarts如何添加多个handle(拖拽手柄)?
echarts可以在横纵坐标轴上添加可拖拽的手柄,并且实时显示坐标值,但是目前官方的事例只能添加一条竖线,而目前的需求是可以添加多条。谢谢!...
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r - Different runtime for svm and ranger using the same task
I've bench-marked the runtime of the two learners and also took two screenshots of the {htop} while {ranger} and {svm} was ... 1 stringi_1.4.6 munsell_0.5.0 #> [45] crayon_1.3.4...
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useEffect依赖多个
const {id, name, visible} = this.props useEffect(() => { const getData = async ()=>{ const res = await fetch({id, name}); } getData( ... 请求三次接口,这个怎么解决? 如果只依赖visible,lint会报错,提示缺少依赖项...
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react中props怎么定义类型(部分props来至redux,部分来至父级)?
在在react中用typescript时,部分的props属性用redux获取到,但是部分需要父级通过标签属性传递 如: export class Demo extends React.Component<{id: string, name: string} ... } {id: string, name?: string} 写代码又要去判断一次,这个怎么解...
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Oracle Managed Data Access Bulk Copy Error pasing insert statement for table (virtual columns)
We've recently moved to use Oracle.ManagedDataAccess in our application now it supports Bulk Copy. The problem is it ... and the ManagedDataAccess client is 19.10.0 Any ideas?...
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android - How to open a screen from Backendless push notification?
I'm using the Backendless push notification service, and I'm receiving the notification on my device. Backendless push ... method maybe, that contains Navigator.push(...))....
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微信小程序怎么科大讯飞AIUI平台webapi接口,我请求了,但是请求不回来数据
是我的代码有什么问题吗,还是方式不对呢 请求成功了,但是返回不出数据...
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python 3.x - pip download specificying platform any - results in no matching distributions
I am trying to download python dependencies for a case where a system doesn't have network access. If I ... versions: none) ERROR: No matching distribution found for pandas...
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vue 孙组件$emit 方法以后,根组件(父组件)能直接获取吗?
vue 孙组件$emit 方法以后,根组件(父组件)能直接获取吗?...
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Why does javafx-maven-plugin:jlink cause a java.nio.file.AccessDeniedException?
I am trying to use jlink as part of the javafx-maven-plugin plugin to create a runtime image with AdoptOpenJDK 15. ... path to the project has been omitted from the error message....
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.net - EF Core how to map table names to Entity names, not DbSet names?
I see the CodeFirst in EF Core generates the table names from the DbSet names of the DbContext. If I have DbSet< ... namespace, is there a way to remove the namespace from it?...
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Officemate Database Schema
I am creating some data visualization with Officemate's database(MSSQL) however I am not sure how all these ... anyone has information on this that would be greatly appreciated....
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python api s.table不支持中文列名?
Python Api中银行s.table(data=df, tableAliasName='temp') 提示'银行' is not a valid variable name, thus can not be used as a column name in DolphinDB 不是支持中文列名么?...
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typescript - How to properly use default values for properties on Angular 11 / TS 4?
I researched a lot but couldn't find out what happened with default properties on angular 11/TS4. For example, on Angular ... please let me know if anything is not clear. Thanks!...
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linux - awk 'FNR == 2 {print}' issue
I have some task on which i need to know the install date of WLS which is located in second row ... 2017 /opt/weblogic1221/wlserver_12.2.1/installation/install/envVars.properties...
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linux
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vue项目中想做页面缓存,但是用keepalive无效
需求是我在点击页面的tag栏时页面需要有缓存,百度了很多方法 在app.vue文件中keepalive包裹了路由 data中写了页面的name,这个name是我在文件中定义的 但是没有起效 求解!~~...
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Apache Ignite 2.9.0 performance
We have setup a ignite cluster 2.9.0 with native persistence enabled in AKS. We wanted to evaluate apache ... gb Jmeter requests - 3 concurrent threads continuosly for 5 minutes...
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Rust-Wasm 向 Vue3 传递函数,并绑定到dom事件上
本人想通过由 Rust 语言 写的事件函数经过编译成 Webassembly 然后给 Vue3 的事件绑定函数使用 Rust 语言使用的包为 wasm-bindgen 编译工具为 wasm-pack 编译命令:$ wasm-pack build --target ... "); 是可以被绑定上, 但我是想使用这个事件参数,不知道怎么解决,希望有解决方案...
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逻辑习题: The Science of Programming, David Gries 第二章习题七答案有一句话看不懂
请问:原书解答中 This adds m propositions {E}i at the main level.到底啥意思?(见附件中划红线那句) 这使得主层增加了m个{E}i.(按我理解,应该是一次操作增加了k个啊.) 这使得主层由m个g组成的{E}i的个数增加了.(难道是这个意思?)...
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逻辑习题:
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react build打包之后无法运行css文件
问题描述: 如上所示,网页再服务器上无法运行css文件,本地直接打开就可以,请问大佬们这是什么问题呢?...
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nginx配置 访问https接口
数据接口是在网上抓取的https接口,项目部署时,请问nginx该如何配置? 目前Status Code: 200 OK,但页面不显示数据 listen 80 default_server; listen [::]: ... } error_page 500 502 503 504 /50x.html; location = /50x.html { } }...
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Jan 25, 2021
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nginx配置
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node.js - How to copy back to host package-lock.json/yarn.lock after install dependencies inside docker container?
I'm using Docker containers to run my CRA application. I use 2 different DockerFile, one for running CRA in development ... , but I didn't find anything to resolve this problem....
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nuxt.js - Nuxt build only from git committed sources
As the title says, is there a way to build for deployment in Nuxt while ignoring any uncommitted changes?...
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Jan 24, 2021
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Airflow - Xcoms and parallel jobs - problem (xcoms overwriting themselves)
I have the pipeline below. On my 2nd level of tasks (first paralel tasks) I write a Xcom with some ID, then in the ... Image can be seen here: https://i.stack.imgur.com/aXFWz.png...
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mybatis-plus怎么添加自定义查询条件
项目中所有用到QueryWrapper全局添加自定义查询条件的sql, 每次都要写个查询条件queryWrapper.eq来查询数据权限,希望全局能调用,求大佬帮助!...
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