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1 answer

if statement - How to use short if in flutter?

How to use short if in flutter this code can use: 1 + 1 == 2 ? print('check true') : print('check false'); Ans. ... 2 ?? print('check true'); Why code can't print check true?...

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

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316 views

1 answer

springboot 路径映射基础问题

原因：启动的问题，直接启动没有在tomcat中生成jsp的相关文件，可以使用下面的方法启动项目就可以正常访问疑问：什么情况或项目会出现这个问题？需要这样操作？一个基础demo，浏览器访问http ... login(){ return "userLogin"; } ... ... 三. WEB-INF文件夹下有userLogin.jsp 文件图2：...

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

0 votes

274 views

1 answer

帮忙解释一个 js 代码的意思

html 页面中制作了一个用于文件上传的的 input 看下图最后一个 const 一句，不明白什么意思...

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

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234 views

1 answer

performance - href link slow to load

I am using my href as <li><a href="<%=ResolveUrl("~/On_Call_Pages/Accident_Investigation_Team.aspx")%>">Accident ... so without having to create an entire new master page....

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

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345 views

1 answer

ts引入axios后，axios方法使用不了

test.ts import axios from 'axios' console.log(axios.get('https://www.xxx.com')) 这样子的话会报错 TS2339: Property 'get' does not exist ... (axios as any).get('https://www.xxx.com')) 求大佬求大佬...

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

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703 views

1 answer

python - What is the pythonic way of running an asyncio event loop forever?

From the docs it seems the recommended way to kickstart a asyncio application is to use asyncio.run(), so my ... , one way of sleeping forever on the asyncio event loop?...

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

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435 views

1 answer

怎么样才能让子元素继承父元素高度?

<div class="father"> <div class="son"></div> </div> father的高度是屏幕高度 son的高度是内容高度现在想让son继承father的高度怎么做？...

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

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285 views

1 answer

问个系统集成方面的问题【智能电视机】

客户有个需求：一个菜市场中有不同的摊位，需要给每个摊位安装一台显示器来显示当前摊位的经营户信息与商品价格（初步考虑使用智能电视机来充当显示器）这些电视机通过WIFI链接到市场中的无线网络，每台电视机开机后直接启动系统自带的浏览器并访 ... 不适用电视机，适用集成微型电脑的显示器（其实就是一体机）可行吗？ 3.除了上面的解决方案，还有其他的解决办法吗？...

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

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300 views

1 answer

有什么开源的协作平台推荐

有没有像飞书之类的开源写作平台？天天写word接口文档，写完邮件每人发一份，飞书在线编辑用的很舒服（虽然也可以用git但是。。）公司没有外网，想在内网部署一个，大佬们有没有推荐的...

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

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164 views

1 answer

为什么PDOException不能被set_error_handler、set_exception_handler所捕获

入口文件注册错误处理机制 // 设定报错级别为全部 error_reporting(E_ALL); // 设定错误日志记录文件 ini_set('error_log',SYSTEM_LOGS_DIR.date("Ymd") . ... , E_PARSE]); } } // 注册自定义错误处理 ErrorCatch::register();...

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

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246 views

1 answer

Java的localdate如何调整一周起始日为周日

本来为了老外的习惯把周日定为一周的起始日，写着写着发现LocalDate计算时是把周一当作起始日的没出过国全凭小学讲的周日是起始日如下是计算2020-10-21上一周的周 ... ,21); date.with(TemporalAdjusters.previous(DayOfWeek.SUNDAY)); 这个Localdate有哪个接口能快速调整吗，哭了...

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

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344 views

1 answer

动态路由加载，前面都打印循环出路由，为啥一到这个地方就会报错

...

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

0 votes

401 views

1 answer

ios - WKWebView full screen with hidesBarsOnSwipe of navigation bar

I want to make a custom browser working with ARKit in background. I set UINavigationController as rootViewController and ... . And home indicator does not occupy any area....

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

0 votes

283 views

1 answer

请问大佬用elementui的tabel组件能实现这样的功能吗

就像图中在表格的每一列顶部增加一块自定义的区域，大佬们elementui的话有没有什么好的解决方案呀？...

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

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542 views

1 answer

使用 ts 的小程序项目编译时能否不在项目文件中生成 js 文件？

如题，使用 ts 的小程序项目编译时能否不在项目文件中生成 js 文件？...

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

0 votes

453 views

1 answer

javascript - How to save the current HTML file with JS

I write value in inputs and after clicking to a button it shows me in the table. But how I can save the current ... with JavaScript after adding new values to the table??? Pls help...

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

0 votes

319 views

1 answer

Chose random a word from txt file and mark it as chosen in C

I want to randomly extract a word from the text file and mark it as chosen.(I want to add a * at the end of the word) I can ... if( result != 0 ) break; } while(1); fclose(fp); }...

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

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461 views

1 answer

请问cgal有没有iOS版本？

关于cgal，它就是几何库，很强大。但是我在iOS端没看到，因为近期有个需求用到了里面的某个函数。所以有谁知道iOS版本的，或者知道如何把它应用到iOS中也告知。谢谢...

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

0 votes

569 views

1 answer

el-table tableData重新赋值的情况下，如何保存之前多选的数据

功能区 <div class="function-area"> <div @click="selectModule(item)" v-for="(item,index) in modules" :key="index" class="moduleName" :class=" ... 全选选中取消选中这些情况下的精准数据有什么好的实现思路吗...

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

0 votes

590 views

1 answer

flutter怎么让setState变成同步的

void test() async{ setState(() { _showWidget = LineSpinFadeLoaderIndicator(ballColor: Colors.blue); }); for(int i =0;i<1000000;i+ ... 比setState先出结果了，因为setState是异步的，怎么让setState变成同步的...

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

0 votes

470 views

1 answer

rpmbuild - Any way to override RPM Spec file through command line arguments?

I'm working with a system having about 2000 RPMS in it installed. Now as per some new requirement, I need to build ... to the concepts of RPM and rpmbuild. So pardon any mistake.]...

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

0 votes

564 views

1 answer

python 3.x - Class list - How would I make this repeat to the amount of students entered?

How would I make this repeat to the amount of students entered? Everything I've tried doesn't work. numStudents = ... : Student name: Student Number: Student name: Student Number:...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

602 views

1 answer

apache spark - concatenate array field in one record with all other recodes - pySpark

Schema root |-- userId: string (nullable = true) |-- languageknowList: array (nullable = true) | |-- element: struct ( ... ,"English","English"],[2,"German","German"]] }]...

asked Jan 25, 2021 in Technique[技术] by 深蓝 (71.8m points)

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685 views

1 answer

kubernetes - Azure Container Instance - restarting once in a while for no apparent reason

I have a few different containerized web apps running on Azure Container Instance (ACI). I recently noticed that some of these ... t have any logs to look at for quite some time.)...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

647 views

1 answer

关于Bringing-Old-Photos-Back-to-Life项目报错

https://github.com/microsoft/... 微软开源项目，安装完依赖运行不了，不知道哪里有问题，求大神指导...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

673 views

1 answer

Python爬虫失败，

为什么每次爬虫运行完代码都是显示这样的错误呢？ DEFAULT_PARSER_CLASS = etree.XMLParser AttributeError: 'function' object has no attribute 'XMLParser'...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

670 views

1 answer

JavaScript Array.sort() 运行与V8源码运行有差异？

在对 Array.sort() 进行深入研究时发现sort()方法在运行时的插入排序算法（长度<=22时使用这个算法）有差异先来看V8源码的运行 V8源码第710行： var InsertionSort = function ... 44 33 5 66 44 6 66 77 7 55 66 8 55 44 这个是实现上有差异吗？...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

726 views

1 answer

ReactJS: Too many re-renders in function

I am trying to make a small function, which makes a likable Button. My function should work, but the error I get is too many ... onClick={setIsLiked(false)}/> } </p></Col> ) }...

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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