Recent questions in Technique[技术]

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rest - Content-type='application/json+merge-patch' in TRestRequest

Environment: Delphi 10.4.1, Windows 10 I create an application using REST components to communicate with server ... , 'TUserSettingsManager.PatchSettings', False, False, 1);...

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

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Java - Spring Boot - Reactive Redis Stream ( TEXT_EVENT_STREAM_VALUE )

I want to write an endpoint which always shows the newest messages of a redis stream (reactive). The entities look like this ... got the expected N+2 entries - so (2) worked aswell...

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

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php - PHPMailer Laravel issue

I am having an issue using PHPmailer class in laravel ,sometimes the email is sent and in very rare case its not sent but after ... = 'Hey'; $mail->AltBody = ''; $mail->send();...

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

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abbyy - "The RPC server is unavailable" Error on Azure Could Server 2019

This is regarding Abbyy Setup issue that we are facing on a Azure Cloud Machine which is a Windows Server 2019 ... during Abbyy Engine Initialization. How can this be resolved?...

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

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876 views

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node.js - Can we define the two different tasks independently without promises, callbacks or async/await?

Here I want to know the difference between the two code layouts execution? How will they execute or will the ... done to improve this? Is nested callbacks will get errors?...

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

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1.1k views

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关于浏览器关闭操作js代码执行情况？

点击x关闭浏览器，浏览器是否会等待js同步代码执行完成，然后再关闭？如果不等待同步代码执行完成那么浏览器是如何处理未执行完的代码？那么onbeforeunload事件岂不是没多大意义？...

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

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1.4k views

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dart - Flutter null-safety migration

When I use the dart migration tool, it suggests that casting for builder of AnimatedBuilder: Added a cast to an expression (non-downcast) Is this really necessary?...

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

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1.3k views

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java xpath 报错求指教，字符串报错

package main; import com.company.mingspider; import org.dom4j.DocumentException; import org.dom4j.Node; import org.dom4j.io.SAXReader; import ... 这里的ResponseBody 是字符串，为啥报错呢？求教，谢谢...

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

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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)

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1.8k views

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请问这个链接里面的视频如何爬取

视频网页抓包只发现了swf这种请问如何抓取...

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

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android - Get java.net.SocketException: java.lang.IllegalStateException: No factory found. While trying to send POST request to HTTP server

I am writing an Android application in Android Studio which is sending a POST request to the server. I have made a class ... it doesn't seems to work so I deleted them. Thanks!...

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

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3.1k views

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typeerror - how can i prevent this error in my code" int() can't convert non-string with explicit base in python."?

there is two things i can't understand: 1-What does "nonstring - with excplicit base" means? 2 How to solve it? you can ... a python guy but im trying to do smth from time to time....

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

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2.4k views

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kubernetes - you must specify an existing container or a new image when specifying args

According to the Kubernetes docs, you can start a debug version of a container and run a command on it like this: $ kubectl ... :"go1.13.15", Compiler:"gc", Platform:"linux/amd64"}...

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

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2.4k views

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How should I free a malloc variable when it has been assigned to another variable as well? (C Language)

Sorry if this has been asked already. I have this program: int main() { int *X = (int *) malloc(sizeof(int)); *X = 10; ... to call malloc() for Y as well, or is Y fine as it is?...

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

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3.5k views

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令人头疼的正则

如何用正则替换成这样正则玩的好的老哥帮帮忙...

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

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3.8k views

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sql server - Can a database be added to an HA group online?

Edited I created a new database on my HA server and I need to add it the to availability group. It's a new ... operation? Didn't find that info on msdn. Thanks for the help...

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

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4.2k views

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presto - date_add for timestamp in Hive

im currently running a query in presto db which has a condition like below: x.created_date > date_add('day',-15,y. ... 11-24T21:08:20.046000 Any help would be appreciated.Thank you...

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

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3.5k views

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对象动态key赋值问题

问题如下：主要目的是修改 input 的值，但是现在只有 key 这样的变量，如何修改data 中深层嵌套的 input 的值呢？...

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

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3.8k views

1 answer

为什么说二级索引不唯一，不唯一是指什么不唯一呢？

为什么说二级索引不唯一，不唯一是指什么不唯一？...

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

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3.9k views

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image - Django Update Existing ImageField not working

I want to give a user the ability to update the image associated to a record. I have an edit form that allows the user to ... > View Collection</a> </form> </div> {% endblock %}...

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

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4.4k views

1 answer

The compiler is unable to type-check - SwiftUI

I'm trying to get used to the MVVM-Pattern in swift. So I was coding around a bit and I get this error again and again: ... () } } Would love to hear from you - Thanks in advance....

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

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4.7k views

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How set a variable as a parameter value in JMeter

I'm trying to set a variable as a parameter value in a Backend Listener. I tried to add the variable as ${"testname"} and ... and not as a variable. Any ideas how I can do that ?...

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

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4.2k views

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vue3使用render函数后，css样式失效，求解？

我在vue3中使用了render函数，如下 <script> import {h} from 'vue'; export default { name: "test1", render() { return h('div', {class: 'color'}, 'test' ... 多了 -s 导致css不生效，但为什么会多了这个 -s 后缀？求大佬解答 ...

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

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3.9k views

1 answer

sum of squares (4 values shaping a square) within a 2d numpy array. Python

I am looking to sum each 4 point combination in a 2d array that forms squares within the matrix in4x4 = np.array( ... my purposes, but maybe I am just configuring the kernel wrong....

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

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3.8k views

1 answer

请问一下，移动端页面加载问题

列表图片比较多，内容都得请求接口加载的比较慢。怎么优化呢，vue做的项目，是在页面加载之前放个整页loading吗，应该放到生命周期里面还是数据请求结束后...

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

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3.8k views

1 answer

为什么数组（注意，是数组）竞然能作为下标访问普通JS对象的属性呢？

发现了一个非常奇怪的现象，不明所以特请教大神，求解答！首先定义了如下一个普普通通的JS对象： const obj = { a: 'string0', b: 'string1', c: 'string2', d: 'string3' } 然后通过以下方 ... 象属性的方法，都没什么稀奇的但是无意间发现，第四种方法也能正确访问对象的属性，这是为什么呢？...

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

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4.0k views

1 answer

python - Best parameters of an Optuna multi-objective optimization

When performing a single-objective optimization with Optuna, the best parameters of the study are accessible using: ... the best parameters for a multi-objective optimization ?...

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

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3.0k views

1 answer

.NET Core 同步和异步的差别是什么

是指Action方法如： public ActionResult PushFileData([FromBody] Web_PushFileData file) //同步 public async ActionResult PushFileData([FromBody] Web_PushFileData ... 户B请求方法，都是在不同子线程里分别执行的 ...

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

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