Recent questions in Technique[技术]

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请问怎么把这个数组里面的值依次取出来变成json格式的

var data=[ {id:0},{id:1},{id:2},{id:3} ]...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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有关JS小程序的疑惑

在看js高级程序设计这本书看到书中的一个小例子有点不懂这个例子意义在哪因为懂c++ 所以明白这个switch 但是由于js中 case值可以是字符串变量所以这个例子不太明白 switch ("hello ... 我不太明白 switch里面的的hello world是什么意思感觉这样的话岂不是永远会输出Greeting was found了？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Laravel Passport在前后端分离项目中的使用问题

描述：用户在前端登录以后，获取access_token，保存至localStorage，用户注销则销毁localStorage中的access_token 如果过期时间8小时的话，在access_token未过期的时间内，用户多次注销和登 ... 的access_token只有一个是有效的（未过期的）？如何清理过期或被撤销的access_token ?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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987 views

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hive metastore - MinIO Cluster Integration with Spark

I have installed MinIO on three nodes cluster. I am trying to install Spark and Hive Metastore on top of it. In ... node3:8081. How to set this to fs.s3a.endpoint properties?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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326 views

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javascript - Fade out old flash message before fading in new one?

I am new to jquery. I have a form which performs a calculation, and returns the result in a flash message. My goal behavior ... (2500); }); }); CSS #diagnosis { display:none; }...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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486 views

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ios - Printer Access popup not showing up in WKWebView but in Safari

I have a print button when tapped it will open a Print page, In Safari it's working as expected, when the ... a print button is Tapped. Help or suggestions would be Appreciated...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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what to use in c/c++ app: libgit2 or git command console output through a pipe

I want to write a git viewer whose main features are: the horizontal axis of time (while rotatable/zoomable). Commits should ... is a joke. Does the same hold true for libgit2?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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typescript - How to verify the dates are displayed correctly from array by ascending and descending order

I have captured the dates from array by using below code, and I need a help how I can verify the displayed dates ... is to verify the above dates are displayed in ascending order ....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Windows的Git客户端怎么设置本地默认工作空间？

如图，每次clone项目到本地的时候，都要选一次存储地址，真鸡儿麻烦！请问，Git哪里有设置项，可以配置本地默认的工作空间？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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如何让maven优先使用用户setting.xml的配置？

maven有2个位置可以选择配置M2_HOME/conf/setting.xml和~/.m2/setting.xml 前者是全局性的，后者是针对用户的。查询资料是说用户配置优先级高于全局配置，但是配置了~/.m2/setting.xml，还是会使用全局的配置，是什么问题。谢谢。...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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关于can.js模板与控制器传值得问题

<div class="order-success-r3"> <div class="order-success-r3-c1">{{priceDesc}}：<span class="text-important">￥{{sf-totalprice ... 在这块view中discount传过来的是json对象，但返回的却是function函数呢？？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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MATLAB做聚类后，如何将其中一个簇的数据集单独提取出来？

在做聚类后，如何将聚类的簇分别提取出来，比如讲簇1中的数据全部提取出来，方便下次对簇1进行再次聚类。...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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433 views

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Front camera cannot capture image - Flutter Camera

after upgrade my camera plugin into 0.6.3+2, i cannot capture a image using front camera. ... //raw.githubusercontent.com/billbull21/Code-Hosting/main/custom_camera_component.dart...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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cocoa - NSCollectionView with Dynamic Width Items Using Auto Layout

I'm building an NSCollectionView that scrolls horizontally with items that look something like this: I have my ... layout to set the dynamic width of my NSCollectionViewItems?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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hexo样式无法加载

1.用的是yilia主题，之前也出现过样式无法加载的情况，后来我修改了blog文件夹下的_config.yml文件里的url为如下，就正常了； 2.今天本来想修改头像（并没有更改_config.yml文件的内容），修改过程中样式突然无法加 ... 完后均重新部署）均没有用； 4.以下是我的deployment以及报错内容： 5.请问各位大神这种情况该怎么办？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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在单页应用（SPA）中跳转页面时会触发unload事件吗

如果不触发我们在单页应用中垃圾回收机制怎么优化？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java类加载机制-类定义中new如何理解

package my.test.jvm; public class testJVM2 { void print1(A2 a){ System.out.println("void print1: "); } static void print2(A2 a){ System.out. ... 启动一个新的类加载过程？如果未启动，那这个过程又是如何进行的？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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vuex 内mutation 方法同级互相调用？

vuex 内mutation 方法同级互相调用？ setAlert(state, data){ console.log(JSON.stringify(data)); data.btns = data.btns || []; ... }, hideAlert(state){ state.uiAlert.title=state.uiAlert.msg=""; }...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Passing values to controller from ASP.NET MVC view

I have a problem with sending checked checkboxes values to my controller, I checked them all but nothing happen. I can do that only ... { window.location = result.url; } } }); });...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Is there any way to do Custom dynamic mapping of different number of columns in Azure dataflow or any other options to achieve this?

My source (CSV file in ADLS) has header record(3 columns) , detail records(5 columns) and trailer record(2 columns) . The header ... |~cse|~378|~2020 2|~John|~|~430|~2019 99|~3...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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angular - '{ 'id': string; 'name': string; 'parentId': string; }[]' has no properties in common with type '{ headers?: HttpHeaders }

Have recently upgraded my angular project from 4 to 6. Getting error message while calling the API. And my commonLoad Value is Error ... ; }; observe?: "body"; params?: Ht...'....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Set active cell when click on it in ReactJs

I have this component: const arr = []; const test = (date) => { arr.push(date); }; ReactDOM.render( <Space ... but my condition does not work. Who can help? Link to codesandbox....

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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638 views

1 answer

使用Oracle SQL Developer时，通配符查询返回结果为空表

软件版本4.0.2.15 Build 15.21 数据库中有一个名为PERSONS的表，结构及内容如图：输入查询语句 SELECT * FROM PERSONS WHERE City LIKE '[BL]%' 运行结果为空表，何故？...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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关于retrofit2.0框架的一点小问题？

在Activity中有个网络请求，但是在网络请求没有完成就已经将当前的Activity干掉了，但是网络请求依然存在，由于网络请求我放在了Present类里了（就是MVP中的Present层），并且请求依然存在，会保留已经销毁的Activity的引用，这 ... ，我现在想关闭这个请求，该如何关闭？或者说还有什么方法可以解决这个问题？？？跪求大神们的解答！！！...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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VR播放器插件有哪些？如何在HTML5上实现vr播放，急！！！

如何在html5上实现播放VR...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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193 views

1 answer

python - How to update Django model fields in MySQL database

I created a model for posts in Django and I'm trying to update one of the fields in the database (MySQL). ... is not recognized. Is it possible to update preamble to introduction?...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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112 views

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I have a query in Spark-Scala

I have tried the following in spark-scala. Logic: If Code in Data1 = Code in Data2 the record has to be written to the output file. so based on ... ----------+-------+------------...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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266 views

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Ucenter同步登录失败

最近发现bbs的同步登录失效了，排查一下发现本地环境是可以登上的于是到服务器上打印 uc_user_synlogin($uid); 发现输出的是 <script type="text/javascript" src="http://bbs.xxx ... 是可以登录的到ucenter里面看参数也是一切正常，ucenter应用也是通讯成功一天了都没有头绪...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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