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关于react渲染更新的问题下图是一个弹窗代码如下如果是修改的话初始值为data的内容，下面是render部分但是问题出现了 data中的triggerTime是6，为什么formData的triggerTime是3，就是说没有更新formData很疑惑，这种情况应该怎么做我感觉像是闭包的问题...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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295 views

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Reflect 定义属性后传给后台属性丢失的问题

代码 Reflect.defineProperty(params, "tenantId",{value:this.$mes_tid}); Reflect.defineProperty(params, "orgId",{value:this.$mes_oid}); 我在 ... network 显示的发现少了 tenantId 和 orgId! 请大佬分析...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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322 views

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c# - How would I write JSON to a S3 file from an input stream without loading it all into memory?

Let's say I want to do something simple like convert a CSV file to a JSON file. One easy way to do that would ... . But I'm hoping someone has a more elegant approach to propose....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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js for循环遍历问题，如何判断每个数组的值都一样

let list =[ {"id":?"123",??"accessionStatus":?"WaitJoin" }, {"id":?"321","accessionStatus":?"WaitJoin"} ] 我该如何 ... 呢，假设其中一组的accessionStatus不为WaitJoin，那就是false，如果每组都是，那就是true...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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关于cron表达式的问题

想要实现的结果是这样的:从今天(2020-07-17)起,每隔3天执行一次job,cron表达式这样写：0 30 8 2/3 ? 理论上到7月29号,间隔3天接下来应该是8月1号,这里是8月2号,查了下是因为2/3表示每隔3天,从每月的第二 ... 为每个月份的天数是不一样的,31天和30天这样就会导致会按照3天的间隔漏掉某个日期,请教各位如何解决这个问题?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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excel - Column total value at the end of a dynamic table using VBA Code

strong textSample table I want to get the total of the columns "Value" & "Quantity" which is in a dynamic table (in ... will be different each time) at the end of the last row....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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r - finding missing values in using linear regression model and indicating whether the value is from available data or filled by regression

I have data frame in R and I have some missing values in one column and I want to filling the gaps using linear ... are from regression model and which are from my available data ?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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271 views

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ios - How to connect MQTT server with using .crt SSL certificate file?

I have m2mqtt_srv.crt SSL certificate file. I am using CocoaMQTT library. I want to connect my MQTT server on port 8883. Below is ... I have to use? I have no idea how to do it?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Spring security Oauth2整合获取token的问题？

通过oauth2.0自带的接口 oauth/token 可以获取到token 和refresh_token等信息，但是这个接口需要传递好几个参数 http://localhost:7500/ ... =cpms_oauth_server&client_secret=cpms_oauth_server 怎么样可以只传递用户名和密码就可以拿到token呢...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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IE请求被挂起

有没有碰到这种问题，vue项目在ie上登录不进去，提示此页上的代码禁用了反向和正向缓存。然后看网络请求，登录接口也被挂起我把cookie换成localStorage也不行。这是什么原因啊？求大佬解惑...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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481 views

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面向对象设计是否对象的行为应该和业务强耦合?

公司一个业务线的产品在设计的时候把业务相关的操作在domain这一层嵌入的很深,里面的很多基础方法都做了业务处理,导致后面有项目借用这个业务框架做开发的时候碰到很多坑,在底层要把很多业务相关代码剥离掉.我一直倾向于值对象应该简 ... 的复用性才高,业务处理应该放在service层或者dao层的业务相关处理方法中,不知道大家所在公司的框架设计思路是怎么样的?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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263 views

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python - How to open other applications through Kivy

I have a decent hold on Python, but completely new to developing android applications. Hence, I thought of using Kivy, ... . Any help with this regard would be highly appreciated!!...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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299 views

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c# - Load the result of LINQ XML file to datagrid

I have an xml file. And I want to load just the content of "Project1" and sort to "TaskID". My XML file: <? ... can help me to solve this problem. Sorry if my English is terrible....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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475 views

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xaml - Adding Keyboard Accelerators to Telerik RadDataGrid in UWP

I have a Telerik RadDataGrid in my UWP where I want to add the following keyboard shortcuts/controls: Ctrl+T: First ... escape the datagrid using Esc. How to achieve this goal?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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224 views

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javascript - Make page only accessible if logged in - React

const HomePage = ({ onPageOpen, history, match, receiveToken }) => { useEffect(() => { onPageOpen(); if (match. ... steps/guide/advise on how to achieve my intent. thank you....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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maven - Error: Could not find or load main class discord.java.bot.JavaDiscordBot

I am creating a Discord Server Bot and when I build and execute jar file it says Error C:Users[user.name] ... ------- C:Users[user.name]IdeaProjectsJava-Discord-Bot>...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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The second argument for 'concat' must be a string or a char

我在DolphinDB中执行下列代码： db = database("dfs://transport") tb = select top 1000 * from db.loadTable(`autos) select concat(concat( ... monthOfRegistration两个字段的类型都是INT 数据如下图所示：请问怎么解决？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to solve this problem "permission denied”, when I start `docker compose up`?

When I just run docker build, I don't have any problems. But, when I start with docker-compose up : Cannot ... . dockerfile: service.dockerfile platform: linux ports: - 8080:8080...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Create Histogram with matplotlib - Python

I'm trying to create histogram (x = duration column; y = count of occurrences) with matplotlib but without success. ... can download the file from my github account. Thank you....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

springboot mvc自动配置问题？

其中的自动配置类WebMvcAutoConfiguration里面的两个内部配置类:1:WebMvcAutoConfigurationAdapter；2:EnableWebMvcConfiguration 然后WebMvcAutoConfigurationAdapter上有个注解:@Import( ... 配置类不是就不生效？这不是自相矛盾吗？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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889 views

1 answer

ant-design-vue修改导航栏颜色和布局出错

使用antdv写导航栏菜单，导航栏组件有默认的margin-left,而且100%无法铺满，求解决，然后我是我如何想把导航栏变成版透明，文字是白色，鼠标滑动到文字颜色变色并出现3px的border-bottom，怎么搞啊...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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791 views

1 answer

ffmpeg - discord music bot downloads all videos on a webpage instead of just one

When I try and run this code with any given youtube URL, it will usually say: "Downloading video 1 of 25", ... discord.utils.get(bot.voice_clients, guild=ctx.guild) voice.stop()...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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277 views

1 answer

请教c++ vector insert 问题

以下是一段很简单的向vector中插值的代码 #include<iostream> #include<vector> using namespace std; int main() { vector<int> v; v.push_back(1); v.push_back(2); ... 指针, 然而后面的逻辑操作仍然是在用it这个指针, 所以才会发生错误？...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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151 views

1 answer

数组对象求和问题

let arr = [ {id: 1, num1: 10, num2: 20, num3: 30}, {id: 2, num1: 10, num2: 20, num3: 30}, {id: 3, num1: 10, num2: 20, ... num2相加， num3相加，然后返回得到3个数即num1的总和，num2的总和， num3的总和.......

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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366 views

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git push failed unpack failed: error The lease on index has expired

while trying to migrate git repository to a new git repo we are getting the following error: error: remote unpack failed: ... repo again on new folder, git gc and nothing helped....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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216 views

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html - using 2 wildcards anywhere in the html5 input pattern

I'm working with a word search system, I should be able to use wildcards in the input. The pattern I use works but it only ... ?EAR?CH" or "?SEARCH" or "SEARCH*" or "SEARCH??"...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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420 views

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contextMenu.js如何获取当前被右键元素的信息？

//文件夹列表 $.contextMenu({ selector: '.list-item', items: { "view": { name: "浏览", icon:"view", callback:function(e){ console.log(e) ... 怎么获取被右键的.list-item的信息呢？没有官网，在github上的api也没找到方法 ...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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719 views

1 answer

check if two objects have the same attribute in python

I have the following: class User: """A user class""" def __init__(self, username, father) """Initialize the user ... two or more objects have the same father attribute in python?...

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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