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javascript - clearinterval is not working in react hooks

I am creating a simple timer, when the user clicks on start timer, the timer start's and when the user clicks on stop timer ... /Row> </Container> </div> ); }; export default App;...

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

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flutter - Is there a way to keep focus on a TextFormField without popping up the on-screen keyboard if there is a physical keyboard?

I am creating an app intended to be used on PDAs(mobile computer) devices using flutter. Part of the requirement is ... field has focus, the TextInput.hide line will be executed...

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

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node.js - Image upload using multer-sharp-s3 working locally but not when deployed on AWS, gives Input buffer contains unsupported image format error

I used multer-sharp-s3 to handle image converting to webp and uploading to s3 bucket. It was working perfectly when tested locally. But ... : true, quality: 50, }, }, }), });...

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

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python - RuntimeError: Event loop is closed 'Launcher.killChrome' was never awaited, how to fix?

When i run script it spawn huge amount of chromium and on the end not kill it. Traceback Error in atexit._run_exitfuncs ... your post is mostly code; please add some more details....

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

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Android-Java: java.lang.IllegalStateException: Could not execute method for android:onClick

I am trying to make a sign up form in a fragment in a view Pager. The form has four text fields and a ... java:592) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)...

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

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Apache Flink Stream join using DataStream API not outputting anything

I have 2 streams created using kafka topics and I'm joining them using the DataStream API. I want the results ... going wrong? I can see messages available in the topology Thanks...

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

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JS处理超长数组时的性能优化（给点建议）

有这样一个实际情况，其实非常简单，就是监听滚轮事件后用定长的区间对某一数组做slice，获取的子串会用canvas去绘制当然数组实际长度大于6w 现在有遇到较明显的卡顿，尤其是事件触发频次较高的情况，查看了一下 ... 身的延迟仅为2ms 也就是说是将这6W条数据放置在内存里造成的系统延迟，这样说使用web worker应该也是有用的...

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

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c - Issue generating unicode PDU message 16bit binary

I am using a PDU generator I found from github and everything works fine when generating simple 7bit character messages. The ... char) binary[character]); strcat(pdu,octett); } }...

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

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html - How JavaScript load HTMP page with its own JavaScript file in different folder? Keep getting Error GET http://localhost:x/f.js 404 (Not Found) why?

In my JavaScript file that has name SPA.js, I am loading HTML page called MenuEditor.html with following location: wwwroot ... .js works OK when I drag it into the MenuEditor.html...

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

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javascript - Discord.js v12 Covid Stats command

So basically I have a covid command which shows the stats and works perfectly!. all though, whenever u say something ... .setTimestamp(); message.channel.send(newEmbed) } }}})...

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

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vue 引入 vant组件方式

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

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ng alain从版本8升级到版本9报错：

variable @layout-gutter is undefined in ..node_modules@delonthemelayoutdefault_header.less 希望了解的小伙伴帮忙定位一下问题。...

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

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jsf - How to choose the right bean scope?

I noticed that there are different bean scopes like: @RequestScoped @ViewScoped @FlowScoped @SessionScoped @ApplicationScoped What is the ... I choose a proper scope for my bean?...

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

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plsql连接某台linux上的oracle数据库报“ora-12541:tns:无监听程序”？

只有链接该服务器上oracle数据库报错，连接其他服务器上的oracle数据库不报错...

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

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javascript - I have to make an array of strings from multiple inputs in Vuejs. How can I go about this?

The above picture is how it looks like. Now, from every input time value, I have to create an array: timeSlots:["600 ... , having 40 data variables doesn't look great in the code....

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

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php - Specify Duration while creating Stripe Subscription Plan

I'm using Stripe PHP SDK to create a subscription plan dynamically. use StripePlan; Plan::create(array( "amount" => 2000, ... the Stripe SDK docs to find this but to no avail....

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

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请问省略文章的部分内容功能怎么实现？

请问省略文章的部分内容功能怎么实现？就是文章内容很多。我怎样只让他显示一部分。其余的就显示一个片【全文阅读】？如图：...

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

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Maven test文件夹内不能编译

新建了一个maven项目，想用mvn test-compile 命令编译test文件夹内的java文件，却编译不了而且mvn compile命令可以编译java下的文件提示这个： [INFO] --- ... INFO] Nothing to compile - all classes are up to date 我的test文件夹里面有文件：...

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

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VUE递归组件里的具名插槽怎么才起作用？？？

这是递归组件，每一个div下都声明了一个具名插槽。然后在父组件里引入，并尝试自定义一个插槽内容（插槽位置可能很深），为什么不生效啊，有大佬知道吗？...

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

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mongoTemplate 内嵌查询返回值的问题

@Document("t_member") public class Member { @Id private String memberId; @Indexed private List<Member> wives; } Criteria.where("wives.memberId" ... 个Member对象如何查询只返回 wives 里面的单个对象?...

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

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请问Spring Security怎么实现普通用户登录？

请问大神们，Spring Security怎么实现普通用户登录？管理员表与普通用户是不同的表，表结构也不相同。登录页面与登录后的页面也不同，请问应该怎么弄呀？百度了好多方案，没有太详细的，最后也没有成功。项目是前后端分离的。请大神们指教一下，最好详细一点或者有详细的教程链接或开源项目可以参考。谢谢啦！...

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

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sql - Mysql Error: Invalid use of group function

What should I use in the outer GROUP BY, or what is the error? Without using MIN() in both outer and inner queries, it's ... M.course_id = C.id GROUP BY C.id ) GROUP BY C.id;...

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

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javascript - Refetching resources by onclick from resourceAreaHeaderContent (FullCalendar)

I am using the resourceAreaHeaderContent callback to print some HTML to my resourceArea, including an icon which is supposed to ... is not a function } calendar.render(); });...

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

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python - Django find object with 2 matching fields in for loop

I have an array of Product Object id's: ['ypxiQsnL4Etm', 'eWGzBlgcBy5l', 'ki5H4U4unB2v'] And I have a ... ') combi_products.remove('ki5H4U4unB2v') combi_products = ['eWGzBlgcBy5l']...

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

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关于maven编译问题，在线等！

请问如何使用maven编译生成后的文件能类似图二一样！可以对不同的环境分别做一个二级文件夹存储就行了。图1使用maven编译的图2使用gradle编译的在线等,感激不尽!...

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

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关于watcher的deep配置的一个小问题？

https://github.com/vuejs/vue/... 为什么执行了这里的_traverse函数就能使得把子项添加到dep依赖中？已解决：因为用到读取数据了可以触发getter 但是这里seenObject是干什么的？...

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

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python - How to get meassurement from Flexiforce through Lopy

Hello everyone my code is working now through several comments. But I don't get any meassurements now. I work with Lopy ... it to Micropython. This is my circuit now: My circuit...

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

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javascript - Render Vue on static HTML page with existing markup

I'm trying to render a built vue project (using npm run build) on a static html page on my webserver. This have ... vue.config seems to help, is that required for this scenario?...

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

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