Recent questions in Technique[技术]

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reactjs - SignalR and React - Invocation canceled due to the underlying connection being closed

Good evening. I am building a chat component using SignalR(5.0.1, I also tried an early version 3.0.0) and dotnet core 3.1 ... , values); } catch (error) { console.log(error); } };...

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

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求各位给一个好用的PHP获取拼音首字母，并且支持多音字

例如：阿Q正传输出结果为AQZZ|EQZZ|AQZC|EQZC 网上找了一些都不能用！希望大神给个可用的！谢谢...

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

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list constructors conflict in Coq

I have the following definitions in Coq: Inductive list_variable : Type := | nil | cons (s : string) (l : ... a memory-like simulation. Any ideas as to why this happens?...

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

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coldfusion - Passing cfquery to a cfc function from an element bind attribute

I have a cfc function that accepts a query type argument (with the intent of running a query of query). I am able to call the ... ) to a cfc from a bind, but haven't found a clue....

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

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c# - How to get correct position of pixel from mouse coordinates?

I am getting the mouse coordinates using e.GetPosition. It returns the right coordinates when it is close to 0, however, the ... pixel I click at, but another one a bit further up....

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

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javascript - Why does my code only throw an error when debugger is not attached?

Have you ever had such a problem? Your code works with debugger on but when it is off it doesn't work?? https://osaintilien55- ... ").reduce((object, key) => object[key], obj); };...

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

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database - How can I identify this "search syntax" or "query language"?

Can anyone identify this 'search syntax' or 'query language' ? I am looking for a more complete specification. There is ... conversions, I don't believe this was a home-grown DSL....

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

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获取远程服务器证券数据时的问题

请教，aa是清洗后的STR，复制放入最后一句括号的aa可获取到数据，为何直接引用aa就不行呢？ for index in range(0,len(ll),step): item = ll[index:index+step] ... [i]+"'"+")" ll.append(data) print(ll[0:5],type(ll)) #ll list...

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

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mfmailcomposeviewcontroller - MFMessageComposeViewController + SwiftUI Buggy Behavior

I'm using ViewControllerRepresentable to present a MFMessageComposeViewController so users can send texts from my app. ... with MFMailComposeViewController, but it's not as buggy....

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

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powerbi desktop - How to query kylin cube directly?

I am using apache kylin 4 using AWS EMR. I want to access cube directly instead of query the tables. Is there any ... restAPI but it is just giving me metadata not data actually....

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

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spring - tomcat Exception fixing docBase for context - unable to create the directory

Recently I develop Spring boot project that has complex problems such as downgrading JDK version, changing message format ... I check first for solving this problem? Thank you....

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

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try catch 什么时候用

如果在控制器中不管3721 先写个try catch class Controller { try{ $res = UserLogic::add($data); $res = userLogic::bb(); } catch(Exception $e){ return $e; } ... 去在控制器统一处理返回数据出去？如果处理这些异常信息会比较好呢？...

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

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postgresql - restore back up on localDB got Failed(exit code:1)

guys! I'm trying to restore the backup DB to my local DB, but I got the Failed with exit code :1, ... dylan/Downloads/sportmatch_2021" any one have any idea? thanks in advance!...

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

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如何让maven强制下载某个版本的jar包？

接手了一个项目里面依赖版本有点乱同一个jar包有很多依赖版本一个工程里，依赖的某个jar的版本已经写死，是1.22 用maven helper查看也是1.22 但是在java文件中，某个类显示不可以解析譬如全限定名是 com. ... 现有1.23版本的文件夹，但是没有1.22的无论怎么刷新maven都没用怎么办？如何强制下载1.22版本？...

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

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socks代理出错：Failed to receive SOCKS5 connect request ack

执行命令行：使用本地的socks代理，访问google，设置报错；返回信息非常慢，差不多过了1分钟左右； curl --socks5 127.0.0.1:2012 https://www.google.com ... SOCKS5 connect request ack. 其他说明： socks代理正常开启，www.baidu.com能正常返回数据；...

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

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If statement in access queries in choosing 2 prices from 1 product based on Quantity Ordered

So, lets say I have 3 tables. First table is the product table where it consists of Prod_code, Prod_name, Prod_qty, Prod_Price1 ... . Access and I need you guys' help. Thanks a lot...

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

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php - filter_input( INPUT_SERVER, 'REQUEST_URI' ) returning NULL

Issue: filter_input( INPUT_SERVER, 'REQUEST_URI' ) returning NULL unlike $_SERVER['REQUEST_URI']. Any idea how I can fix this ... ], $filter ); filter_var( $_GET[$name], $filter );...

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

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Gradle Input password from keyboard: System.console() return null

Gradle: input password from keyboard: task Foo { doLast { def passwd = System.console().readPassword("password:") } ... .console() return null. How to input password from keyboard?...

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

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spring boot - @OneToMany and @ManyToOne Jpa

In my spring JPA project I have two entities, Task and Developer. List can assign to a Developer and one Task ... in Spring and Hibernate. Any help would be greatly appreciated....

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

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java - From where does the Attaching Error come?

When I'm Executing my Attacher I will get an Error, and I don't know Why (The Classes are like ... AgentLoadException | AgentInitializationException e) { e.printStackTrace(); } }...

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

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html - Does replacing a form input's outline with box-shadow violate any WCAG guidelines?

Question What accessibility downsides are there to set outline to none and instead use box-shadow to highlight an active input? ... shadow" id="with-box-shadow" class="box-shadow">...

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

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`#include <string>` 和 `#include "string"` 有区别吗？

C++中： #include <string> 和 #include "string" 有什么区别？...

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

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使用docker 搭建本地接口测试服务DOCleaver之后，进入管理总后台，输入账号密码（DOClever）一直报服务器错误

使用docker 搭建本地接口测试服务DOCleaver之后，进入管理总后台，输入账号密码（DOClever）一直报服务器错误...

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

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超级计算机与一般的云计算有什么区别，比如华为云？

最近申请天河二号的计算资源，但是没有理解到超算的独特之处。有哪位大神做过研究，可以帮忙分析一下？...

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

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#ifndef #define #endif 是什么意思？

C++中，filename.h 里面的 #define _CLIENTSESSION_H_ 下面这段话，是什么意思呢？ #ifndef _CLIENTSESSION_H_ #define _CLIENTSESSION_H_ #include "session.h" ... 是在其他代码中使用 CLIENTSESSION_H 然后就引入这个文件头？...

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

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sql - sys.dm_db_index_physical_stats shows I have 3 PK indexes after rebuild

I was checking the fragmentation in the index in one table of my DB with the following ... 1557580587 0 Channel 3 idx_Channel_RegisteredTime 1557580587 0,0429737859905458...

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

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input type=file上传文件有大小限制吗上传23k的文件413 request too large

<td><input type="file" name="file" id="file" required="required"></td> <td><input type="submit" class="btn btn-table" value="上传" id="upload" ... 有默认大小限制吗，如果大小限制怎么改大一点，不至于几十k的都上传失败...

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

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c++ - CMAKE: Override copy files during install

I am facing an issue in my project during install with CMakeList. What I want to do, is, during installation, copy files from a ... , or at least not all... Do you have any idea ?...

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

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