OStack Q&A-Knowledge Sharing Community

0 votes

532 views

1 answer

ruby-on-rails - 行未添加到表，但未给出错误(Row not added to table, but no error given)

I'm new to Rails. (我是Rails的新手 )I have a table called TeamMemberships that has 2 foreign keys: one to Users and ... end end Thanks! (谢谢！) ask by astronautical_22 translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

443 views

1 answer

jquery - 使用Google托管jQuery的最佳方法，但在Google上使用我的托管库失败(Best way to use Google's hosted jQuery, but fall back to my hosted library on Google fail)

What would be a good way to attempt to load the hosted jQuery at Google (or other Google hosted libs), but load my ... //www.asp.net/ajax/cdn/) ask by Nosredna translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

320 views

1 answer

java - 如何在没有迭代器的情况下迭代Set / HashSet？(How to Iterate over a Set/HashSet without an Iterator?)

How can I iterate over a Set / HashSet without the following? (如何在没有以下内容的情况下迭代Set / HashSet ？) Iterator iter ... .out.println(iter.next()); } ask by user1621988 translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

144 views

1 answer

node.js - 如何在Node.js中处理POST数据？(How to process POST data in Node.js?)

How do you extract form data ( form[method="post"] ) and file uploads sent from the HTTP POST method in Node.js ? (如何提取Node ... hack? (有图书馆还是黑客？) ask by Ming-Tang translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

683 views

1 answer

ruby-on-rails - 防止对特定操作进行ActiveRecord关联验证的最佳方法(Best way to prevent ActiveRecord association validations on specific actions)

I have 2 models: User and Purchase . (我有2个模型： User和Purchase )Purchases belong to Users. (购买属于用户 ) class User < ... 在寻找一种更常规的Rails方法来实现 ) ask by Doug translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

298 views

1 answer

typescript - TypeScript将字符串转换为数字(TypeScript Converting a String to a number)

Anyone a suggestion on how to convert a string to a number in TypeScript? (有人建议如何将字符串转换为TypeScript中的数字？) var aNumber : ... 中，如何检查字符串是否为数字 ) ask by Paul0515 translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

341 views

1 answer

python - Django REST Framework API：无法获取字段的字符串值(Django REST Framework API: Unable to Get String Value of a Field)

I am a beginner in Django. (我是Django的初学者 )Right now, I am working with the APIs. (现在，我正在使用API?? )I am facing a ... fix the issue? (我该如何解决该问题？) ask by Shawn translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

583 views

1 answer

matlab - Matlab，我需要找到其元素的总和最小的行（matlabr2019a）(Matlab, I need to find the row with the smallest sum of its elements (matlabr2019a))

E = M; fbest = inf; for k = 1:Rows if sumsqr(E(k,1:Columns)) < fbest fbest = sumsqr(E(k, 1:Columns)); xbest = E(k ... . (我似乎看不到为什么它不起作用 ) ask by Jhon Macieira translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

580 views

1 answer

express - 在next.js中获取客户端的当前URL(Getting the current url on the client side in next.js)

So I am working on a nodejs app which I will have my new website on and I want to make a way for my user ... </AdminLayout> ) export default Admin ask by Linus J translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

389 views

1 answer

sql - 如何根据条件从1条记录创建更多记录（SQL）(How to create more records from 1 record based on condition (SQL))

I am trying to create more records from 1 record based on some conditions. (我试图根据某些条件从1条记录创建更多记录 )For example: If the ... 此操作的任何想法？)Thanks (谢谢) ask by Shang Rong translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

442 views

1 answer

mysql - 如何在单个查询中使用AND＆LIKE OR运算符进行搜索(how to search using AND & LIKE OR operator in asingle query)

I am designing a library management system I want to design a pending request page that select and displays all information ... } return list; ask by ELYAS AYALEW translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

405 views

1 answer

polymer-3.x - Polymer-3.x ..无法通过对象引用从JSON绑定值到paper-toggle-button(Polymer-3.x.. Can't able to bind value from the JSON through object reference to the paper-toggle-button)

//Properties drivingEligibility:{type:Boolean,notify:true} //EventListener driving(){ if (this.$.drivingEligibility.checked == true) ... （纸张切换按钮）) ask by mounika translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

433 views

1 answer

bash - 如何将BASH变量发送到多个脚本？ [重复](How to send BASH variables to multiple scripts? [duplicate])

This question already has answers here) : 这个问题已经在这里有了答案) ：) Pass all variables from one shell script to another? 将所有变量从一个 ... 将变量从一个脚本传递到下一个脚本？) ask by Village translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

241 views

1 answer

node.js - 使用keycloak的安全Node.js后端API(Secured nodejs backend API's using keycloak)

I'm implementing a Nodejs backend API's. (我正在实现Nodejs后端API )Some of them are need to authenticate before access. (其中 ... at port:4000'); }); ask by Padmasankha translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

567 views

1 answer

vhdl - 读/写具有时钟上升沿和读/写使能信号的向量数组(Read/writing to array of vectors with clock rising edge and read/write enable signal)

I am trying to create a simple memory that stores vectors whenever the clock is 1 and wrenable is 1 (and likewise ... 10.1d，Quartus版本13.0sp1) ask by platizin translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

867 views

1 answer

sql-server - 如何在不重复声明的“INSERT INTO dbo.Blah”部分的情况下插入多行？(How do I insert multiple rows WITHOUT repeating the “INSERT INTO dbo.Blah” part of the statement?)

I know I've done this before years ago, but I can't remember the syntax, and I can't find it anywhere due to ... near the keyword 'VALUES'.) ask by Timothy Khouri translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

283 views

1 answer

c++ - 在使用另一类C ++的“朋友”功能时找不到错误(Can't spot the mistake in using “friend” function of another class C++)

Yes I know that private modifier created in order to prohibit access to class data (是的，我知道创建了private修饰符是为了禁止访问类数据) but ... (*成员B :: a无法访问) ask by Vladislav translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

505 views

1 answer

javascript - 如何在JavaScript / jQuery中查找数组是否包含特定字符串？ [重复](How to find if an array contains a specific string in JavaScript/jQuery? [duplicate])

This question already has an answer here: (这个问题已经在这里有了答案：) How do I check if an array includes a value in ... [ "specialword" "word1" "word2" ] ask by Cofey translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

572 views

1 answer

vue.js - 导航栏下拉列表未指向给定的链接(Navbar dropdown is not leading to the given link)

I am trying to make a navbar work on nuxt with Buefy components. (我正在尝试使用Buefy组件在nuxt上进行导航 )I actually have dropdown component ... 下拉菜单项无法将我引导至该链接) ask by f1uk3r translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

447 views

1 answer

android - 如何在Android应用中更改背景颜色(How to change background color in android app)

我希望能够以最简单的方式在我的android应用中将背景颜色更改为白色。 ask by ryan translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

366 views

1 answer

mysql - 我的注释代码有什么问题？(What is wrong with my code on making comments?)

This is my code on making comments. (这是我的注释代码 )It turns out that it has a reference error. (事实证明，它具有参考错误 )It ... col"> <hr> </div> </div> ask by potential-pancake translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

326 views

1 answer

python - 无法解决在python中的Selenium Webdriver中导入密钥的错误(unable to resolve the error for importing keys in selenium webdriver in python)

I am new to python and I am writing a code for fb automation using selenium webdriver. (我是python的新手，我正在使用selenium webdriver编写fb自 ... 以进行哪些更改来解决此问题？) ask by Pragya translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

319 views

1 answer

python - 如何在Python中定义二维数组(How to define a two-dimensional array in Python)

I want to define a two-dimensional array without an initialized length like this: (我想定义一个没有初始化长度的二维数组，如下所示：) ... is my mistake? (我怎么了) ask by Masoud Abasian translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

286 views

1 answer

android - 活动泄漏了最初添加的窗口(Activity has leaked window that was originally added)

What is this error, and why does it happen? (这是什么错误，为什么会发生？) 05-17 18:24:57.069: ERROR/ ... at dalvik.system.NativeStart.main(Native Method) ask by Pentium10 translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

306 views

1 answer

sql - SQL查询以在SQL Server中插入日期时间(Sql query to insert datetime in SQL Server)

I want to insert a datetime value into a table(SQL Server) using the sql query below (我想使用下面的SQL查询将datetime值插入表（SQL Server）中 ... ! (请帮助！)Thanks. (谢谢 ) ask by Shee translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

275 views

1 answer

sql - Oracle SELECT TOP 10记录(Oracle SELECT TOP 10 records)

I have an big problem with an SQL Statement in Oracle. (我在Oracle中使用SQL语句遇到了很大的问题 )I want to select the TOP 10 Records ... ：这个查询真的很慢（超过10k条记录）) ask by opHASnoNAME translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

538 views

1 answer

bash - 什么是首选的Bash shebang？(What is the preferred Bash shebang?)

Is there any Bash shebang objectively better than the others for most uses? (在大多数情况下， Bash shebang是否客观上比其他人更好？) #!/usr/bin/ ... 脚本，但是找不到任何有关它的细节 ) ask by Kurtosis translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

165 views

1 answer

android - 在找到“”的文本中添加\(Add in text where ' is found)

I'm making app, which needs to save post details in SQLite, and that post receives user input, like user text. (我正在制作应用程序， ... '的文本，并且SQL正常工作 ) ask by Igor Lerinc translate from so...

asked Mar 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

Categories

Recent questions

Just Browsing Browsing

Most popular tags