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php - Restructure multidimensional array of column data into multidimensional array of row data

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

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python - How can I show explosion image when collision happens?

I don't know why explosion effect doesn't happen. The other images were drawn well, but only explosion image didn't explosion ... ] for m in missiles if m[1]>0] Question&Answers:os...

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

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c# - Establish a link between two lists in linq to entities where clause

I'm pretty new to Linq and EF and I'm stuck regarding how I could just link two lists in Linq to Entities. I'm ... thing I would be so, so glad. Thanks a lot. Question&Answers:os...

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

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java - Detecting collision of two sprites that can rotate

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

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What is the difference between Builder Design pattern and Factory Design pattern?

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

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ruby - Using Sinatra for larger projects via multiple files

It seems that in Sinatra all route handlers are being written into a single file, if I understand right it acts ... - similar logic that is applied in PHP? Question&Answers:os...

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

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Security of REST authentication schemes

Background: I'm designing the authentication scheme for a REST web service. This doesn't "really" need to be ... the string that gets signed. Is this secure? Question&Answers:os...

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

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javascript - How can I generate an apk that can run without server with react-native?

I've built my app, I can run it on my local emulator (and also on my android device within the same ... development server the image files can't be loaded. Question&Answers:os...

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

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resources - Should a RESTful 'PUT' operation return something

I was wondering what people's opinions are of a RESTful PUT operation that returns nothing (null) in the response body. Question&Answers:os...

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

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scala - What is the advantage of using abstract classes instead of traits?

What is the advantage of using an abstract class instead of a trait (apart from performance)? It seems like ... can be replaced by traits in most cases. Question&Answers:os...

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

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ios - Global constants file in Swift

In my Objective-C projects I often use a global constants file to store things like notification names and keys for ... I do exactly the same thing in Swift? Question&Answers:os...

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

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containers - What's the difference between ClusterIP, NodePort and LoadBalancer service types in Kubernetes?

Question 1 - I'm reading the documentation and I'm slightly confused with the wording. It says: ClusterIP: ... andCluster or am I completely missing the point? Question&Answers:os...

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

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merge - Can I make fast forwarding be off by default in git?

I can't really ever think of a time when I would use git merge rather than git rebase and not want to have a ... I can't seem to find it in the documentation. Question&Answers:os...

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

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Memoization in Haskell?

Any pointers on how to solve efficiently the following function in Haskell, for large numbers (n > 108) ... to compute very few intermediate results. Thanks Question&Answers:os...

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

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Flatten a list in Prolog

I've only been working with Prolog for a couple days. I understand some things but this is really confusing me ... feel like I'm missing something very simple. Question&Answers:os...

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

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php - What does mysql_real_escape_string() do that addslashes() doesn't?

Why do we need a DB-specific functions like mysql_real_escape_string()? What can it do that addslashes() doesn't? ... to SQL injection, and if yes, how? Question&Answers:os...

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

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python - Flask-Login raises TypeError: 'bool' object is not callable when trying to override is_active property

I want to modify is_active in Flask-Login so that users are not always active. The default always returns True, ... ): TypeError: 'bool' object is not callable Question&Answers:os...

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

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c# - Remote Validation for LIST of MODELs

I used the following tutorial: http://msdn.microsoft.com/en-us/library/gg508808%28VS.98%29.aspx And everything seemed fine, ... => Model[i].Username) </td> } Question&Answers:os...

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

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java - Adding ChartPanel to JTabbedPane using JPanel

I want to add JFreeChart to JPanel and then add JPanel to JTabbedPane. I managed to display JFreeChart on JFrame, ... tabStoreTrans.add("chart", new Chart()); Question&Answers:os...

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

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android - Connecting MongoDB from Mobile or Browser based Application

My website uses Mongo as its database. I was wondering if the Java driver from the Mongo website applies to ... because I read that it wasn't supported. Question&Answers:os...

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

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python - Web scraping program cannot find element which I can see in the browser

I am trying to get the titles of the streams on https://www.twitch.tv/directory/game/Dota%202, using Requests and BeautifulSoup. ... </div> </a> </div> </div> Question&Answers:os...

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

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octal - Python: Invalid Token

Some of you may recognize this as Project Euler's problem number 11. The one with the grid. I'm trying to ... Why is it throwing an error before the comma? Question&Answers:os...

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

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android - java.util.zip.ZipException: duplicate entry

I have been battling this error all day in Android Studio. Project was imported from an eclipse solution. I have ... provided files('libs/zxing-core.jar') } Question&Answers:os...

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

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c++ - What is the proper OpenGL initialisation on Intel HD 3000?

I have a problem with Intel graphics HD 3000 on Toshiba notebook (OS Win7 x32, lang C++). Classical single ... or there is some workaround on Intel for this. Question&Answers:os...

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

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set time out in JavaScript

Firefox always loads dynamic images, but IE it just shows images without any dynamic action. what changes I need to do? ... value="false" /> </form> </div> Question&Answers:os...

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

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forms - How to render an openGL frame in C++ builder?

I want to initialize an openGL frame inside a form in C++ builder. I tried copying the contents of this ... to do this properly, any experience with this? Question&Answers:os...

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

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Why the CSS calc() function is not working?

Why this one calc(100vw/4) works but neither of the following do? calc(100vw/4-(10-4)) calc(100vw/4-(10px-4) ... ) where x gets replaced in a SASS loop to work? Question&Answers:os...

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

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java - Cannot resolve constructor FirefoxDriver(org.openqa.selenium.firefox.FirefoxProfile)

Can someone help me with this piece of code. Currently it will complain on line #4 : webDriver ... ); webDriver = new FirefoxDriver(ff_ep_profile); Question&Answers:os...

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

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