Recent questions in Technique[技术]

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gdb gcc 编译输出结构体出现 No struct type named test.

如何输出结构体大小？麻烦知道的大哥给解答一下。...

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

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177 views

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Ansible: How to pass multiple password files to playbook

When I run an Ansible playbook, how do I pass multiple password files on the command line? I want to run this: ansible- ... x if that helps, I'm not bound to any specific version)...

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

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491 views

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我在Mongodb的schema里面加了一个字段就报错了,困扰我一天了,大佬帮帮小白吧,谢谢了

红色框是我直接在模型文件里加的这是报的错,为啥还不能让我改这个模型了,我删掉数据库也没有用,在网上也没看到答案,貌似是这样的但是该怎么解决我是一无所知,憋一天了都,各位大佬 ??...

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

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444 views

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应更新composer.json“guzzlehttp/guzzle”版本来支持laravel8系了

应更新“jaeger/g-http”的composer.json“guzzlehttp/guzzle”版本来支持laravel8系了由于laravel的guzzlehttp/guzzle依赖版本更高，导致无法通过composer集成，需要更新composer.json配置来支持laravel8。...

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

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225 views

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Angular8 MergeMap 串联请求中,第三级如何拿到第一级的值?

解决了将 http 的 this 拿出来用，存储 token 就可以了用 MergeMap 多次请求,第一次拿到 token,想在第二次以后的调用中使用. (第二次MergeMap) ... {projects: Projects}) => { return projectRes.projects.project; } )) }) ); }...

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

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159 views

1 answer

javascript - unzip Api Response ZipFile c# mvc

I got application/x-zip-compressed as Content-Type in the api response How i get the data in this Zip file to a string in c# ... { response.Close(); } catch { } } return resp; }...

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

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288 views

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无法清除浮动？

<div id='html'>html</div> <div id='content'> <textarea id="text"></textarea> </div> 为何无法清除浮动？ div#html{ border:1px solid ... 的清除浮动的方法 content:''; clear:both; display:block; 问题在哪里？...

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

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453 views

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TypeScript 类型定义基础问题

如下 {workbooks: Site} 这个类型错在哪里一.返回数据类型: { "pagination": { "pageNumber": "1", "pageSize": "100", "totalAvailable": "17" }, ... .project.id === sitesId })) }) 打印 item 如下结构：修改后：...

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

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1.3k views

1 answer

nodejs 连接mysql查询数据,根据什么来判断查询成功？

如题，使用以下语句查询后，要怎么判断查询成功或失败？例如 select * from user where id=1，想要判断数据库是否存在id=1这条数据的话该如何写？ connection.query(sql,sql_params,(err,result)= ... ?){ //数据存在，如何取值做对比？ }else{ //数据不存在，执行其它... }...

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

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183 views

1 answer

QuarterRangePicker Input Shiny R

Is there any control in Shiny R to pick a date range by quartals of a year? i.e. Q1/2019 - Q3/2020 In the ... of airDatePicker there is only "days", "months", "years" possible...

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

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1 answer

jQuery源码匹配标签正则什么意思

哪个网站可以看html大全或者说html标准，也就是说制定标签必须是什么符号，我的印象是html只有字母，比如<div>, rquickExpr = /^(?:s*(<[wW]+>)[^>]*|#([w-]+))$/, 但是jQuery源码这里却wW.[wW]是什么意思呢.这句正则还是看不懂...

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

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158 views

1 answer

java 数据变形

原始数据： key1, val1 key1, val2 key2, val3 key2, val4 key3, val5 想变形为： key1 => [val1, val2] key2 => [val3, val4] key3 => [val5] 该怎么写？...

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

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363 views

1 answer

工程lib包含A包，A包内包含B包，但工程内无法直接调用B包。

如图所示，lib导入了包A，包A在打artifact时也导入了包r2-devkit。如果运行该工程，应该是正常的，不用显式导入r2-devkit的jar包，因为其已经存在于包A内。但是写代码的时候却无法调用到r2-devkit.jar包。是项目配置有问题吗，求大佬解惑。...

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

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265 views

1 answer

自學python小白提問：突然出現 SyntaxError: invalid syntax ，但之前運行成功一直都沒報錯

是這樣的,剛剛接觸程式語言不久,是個完全的萌新因為好奇下，就寫了一個可以自動爬取ＦＢ的ＰＹＴＨＯＮ運作是這樣的：使用selenium的webdriver，登陸自己的ＦＢ帳號，再跳轉到目標 ... ) print (start) print ("完成時間:") print (datetime.datetime.now()) driver.close()...

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

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607 views

1 answer

karma start 报错

执行 karma start 后报以下的错使用了 iview ui库...

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

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869 views

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textformfield - Use * (Asterisk) instead of . in flutter textfield

I have a custom form field to enter pin of the app. Instead of using conventional . when writing the pin, I want to use * like ... fontSize: 21.0, color: Colors.black, ), ), ); } }...

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

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235 views

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python - QtDesigner changes will be lost after redesign User Interface

I'm using Qt Designer for design GUI to use in python, after designing my desired UI in Qt Designer, convert it to ... Over Multiple Files in python to write code in other files?...

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

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253 views

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如何在Visual Studio Code中查看PowerShell和.Net文档？

已经安装了PowerShell扩展，但是只能显示参数，不能显示详细的文档，而且对于.NET对象的方法，连参数好像都显示不出来在谷歌上搜索 "Show PowerShell Documentation in Visual ... " 没有找到方法在Visual Studio Code中真的没有办法快速的查看PowerShell和.NET文档吗？...

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

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476 views

1 answer

swiper的左右置灰属性不生效，请问怎么搞

...

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

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301 views

1 answer

thinkphp6.0.4 trace的sql日志为空

控制器代码 $r = Db::name("fund")->select()->toArray(); dump($r); .env APP_DEBUG = true [APP] DEFAULT_TIMEZONE = ... 3306 CHARSET = utf8 DEBUG = true [LANG] default_lang = zh-cn trace...

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

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264 views

1 answer

js数据对比的问题

// 这是个树节点 const treeData = [{ label: '单级导航', arr: [] },{ label: '一级导航', arr: [], children: [{ label: '二级导航', arr ... 的label不存在于treData里的话,就return出去,这里不能保证treeData跟data的长度是相同或者哪个更长的...

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

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450 views

1 answer

Vue的axios封装问题

求解，这个应该怎么配置，网上咋写的都有，还有跨域问题，后台给的接口都会跨域吗，必须在 proxyTable: {}里面配置吗...

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

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418 views

1 answer

js，求一条正则该怎么写

'160px'.replace(/xxx/,'') => '160' '160.66px'.replace(/xxx/,'') => '160' 求解一条正则上面两种情况都能满足...

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

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426 views

1 answer

Neden Haxm yuklenmiyor?

Amdroid Studio yuklenmedi nedeni HAXM butanuna basilmadi API 30 butonuna basdim ama diger butonuna basilamiyor Performace ( ... )-(installed) diyiyor ama basilamiyor buton neden?...

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

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697 views

1 answer

java开发bug问题：GitHub授权登录无法获取授权账号信息？

大佬你们好，我是起武小白最近学习springboot实现论坛项目时第三方授权登录遇到bug，求解决问题：使用第三方GitHub授权登录无法获取授权账号信息的可能原因？明明已拿到access_token，却无换取GitHub账号 ... 参数信息去获取账户信息，却无法获得这就说明access_token有问题，可我不知道问题到底出现在哪里...

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

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597 views

1 answer

vb.net - Draw a rectangle with the mouse, but not when OpenfileDialog is busy

I have a Form1 and a PictureBox. I have also subscribed to the MouseDown, MouseMove and MouseUp events in order to be ... (Pen_Hellblau, recta) End Using End If End Sub End Class...

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

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536 views

1 answer

SQL- Join Same Table with Filters

I have a single table (Tracker) containing 2 columns; (ID and Status). I would like to retrieve a list of ... ID Status 123 Pending 123 Approved 456 Pending 678 Denied 894 Approved...

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

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593 views

1 answer

VUE 网络请求在 created 还是 beforeMounte ？

vue不涉及的页面加载的网络请求是放在 created 还是 beforeMounte？为啥？从结果看，好像两个都可以...

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

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