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python list by value not by reference

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

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c++ - Get path of executable

I know this question has been asked before but I still haven't seen a satisfactory answer, or a definitive ... ) without having to set the working directory. Question&Answers:os...

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

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javascript - How to set 'X-Frame-Options' on iframe?

If I create an iframe like this: var dialog = $('<div id="' + dialogId + '" align="center"><iframe ... set 'X-Frame-Options' to 'SAMEORIGIN'. with JavaScript? Question&Answers:os...

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

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In R, how to get an object's name after it is sent to a function?

I am looking for the reverse of get(). Given an object name, I wish to have the character string representing that object ... print(a) return(mean.x)} test("z") Question&Answers:os...

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

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Generating Depth based tree from Hierarchical Data in MySQL (no CTEs)

Hi For many days I have been working on this problem in MySQL, however I can not figure it out. Do any of ... . Because it is mySQL, CTEs cannot be used. Question&Answers:os...

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

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c++ - Is cout synchronized/thread-safe?

In general I assume that streams are not synchronized, it is up to the user to do appropriate locking. However, ... streams add a layer of buffering on top. Question&Answers:os...

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

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c++ - AVX2 what is the most efficient way to pack left based on a mask?

If you have an input array, and an output array, but you only want to write those elements which pass ... Left Packing Problem from the above document: Thanks Question&Answers:os...

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

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How to convert a string to date in MySQL?

I have a string column which acts as a date and I want to select it as a DATE. Is it possible? My sample data format would be: month/day/year -> 12/31/2011 Question&Answers:os...

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

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Python C program subprocess hangs at "for line in iter"

Ok so I'm trying to run a C program from a python script. Currently I'm using a test C program: #include < ... it run only when there is something to be read? Question&Answers:os...

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

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automatic ref counting - Shall we always use [unowned self] inside closure in Swift

In WWDC 2014 session 403 Intermediate Swift and transcript, there was the following slide The speaker said in that case, ... in self.currentTemp = temp } } } Question&Answers:os...

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

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javascript - React js onClick can't pass value to method

I want to read the onClick event value properties. But when I click on it, I see something like this on the ... a value to the onClick event in React js? Question&Answers:os...

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

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How to get height of entire document with JavaScript?

Some documents I can't get the height of the document (to position something absolutely at the very bottom). ... permissions, if there is some trick there. Question&Answers:os...

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

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c - How does Duff's device work?

I've read the article on Wikipedia on the Duff's device, and I don't get it. I am really interested ... device works. What would a more detailed explanation be? Question&Answers:os...

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

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ios - Getting error "No such module" using Xcode, but the framework is there

I'm currently coding in Swift, and I've got an error: No such module Social But I don't understand, ... Please, how can I make Xcode recognize the framework? Question&Answers:os...

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

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Can Selenium interact with an existing browser session?

Does anybody know if Selenium (WebDriver preferably) is able to communicate with and act through a browser ... Internet Explorer launched manually for example). Question&Answers:os...

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

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php - Calculate business days

I need a method for adding "business days" in PHP. For example, Friday 12/5 + 3 business days = Wednesday ... a more elegant approach out there. Anyone? Thanks. Question&Answers:os...

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

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c# - How to inject Javascript in WebBrowser control?

I've tried this: string newScript = textBox1.Text; HtmlElement head = browserCtrl.Document.GetElementsByTagName("head")[0] ... to inject a script into the dom? Question&Answers:os...

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

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javascript - Is it wrong to place the <script> tag after the </body> tag?

How wrong is it to place the script tag after the closing tag of the body (</body>). ? <html> .... <body> ... "text/javascript" src="theJs.js"></script> </html> Question&Answers:os...

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

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asp.net - Disable browser's back button

How to disable browser's BACK Button (across browsers)? Question&Answers:os...

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

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Asp.Net MVC: Why is my view passing NULL models back to my controller?

I cannot figure out why my view only passes back a NULL for a model to my controller. This is for an Edit ... at the the parameters part of the Edit method. Question&Answers:os...

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

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Options for HTML scraping?

Closed. This question needs to be more focused. It is not currently accepting answers. Question&Answers:os...

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

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oop - When to use an interface instead of an abstract class and vice versa?

This may be a generic OOP question. I wanted to do a generic comparison between an interface and an abstract class ... would one want to use an abstract class? Question&Answers:os...

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

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objective c - Get the current first responder without using a private API

I submitted my app a little over a week ago and got the dreaded rejection email today. It tells me that my app ... for a way that won't get my app rejected. Question&Answers:os...

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

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python - Call a function from another file?

Set_up: I have a .py file for each function I need to use in a program. In this program, I need to call the ... file is not a package How do I fix this problem? Question&Answers:os...

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

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sql - Best way to select random rows PostgreSQL

I want a random selection of rows in PostgreSQL, I tried this: select * from table where random() < 0.01; But ... ? What is the best way to select random rows? Question&Answers:os...

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

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java - "Invalid signature file" when attempting to run a .jar

My java program is packaged in a jar file and makes use of an external jar library, bouncy castle. My code ... could offer some help, I would be obliged. Question&Answers:os...

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

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How can I hash a password in Java?

I need to hash passwords for storage in a database. How can I do this in Java? I was hoping to ... to the stored hash password with their account information. Question&Answers:os...

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

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How to set the java.library.path from Eclipse

How can I set the java.library.path for a whole Eclipse Project? I'm using a Java library that relies on ... run configurations in eclipse but that didn't work. Question&Answers:os...

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

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