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python - zip variable empty after first use

Python 3.2 t = (1, 2, 3) t2 = (5, 6, 7) z = zip(t, t2) for x in z: print(x) Result: (1, ... how its supposed to work? There's no mention in the docs about this. Question&Answers:os...

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

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c# - How to correctly implement a BackgroundWorker with ProgressBar updates?

-Updated--14/10 also asked this question To give some clear idea of what is going on and taking into account the ... clue. I can post more code as needed Ian 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 correct way to use JSON.NET to parse stream of JSON objects?

I have a stream of JSON objects that looks somewhat like this: {...}{...}{...}{...}... So basically ... after the Deserialize call, but how do I do this? Question&Answers:os...

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

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Modifying the middle of a selector in Sass (adding/removing classes, etc.)

I have the following SCSS for styling links in my menu: nav { ul { li { a { color: red } } } ... duplicate selectors (similar to the selector-append() method)? Question&Answers:os...

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

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java - How do I Switch JPanels inside a JFrame

Quite green regarding javas component-stuff etc so please excuse me if information given by me isn't enough! Considet the ... new GamePanel(5); add(gp); } } Question&Answers:os...

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

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working directory - Determine project root from a running node.js application

Is there a different way, other than process.cwd(), to get the pathname of the current project's root- ... looking for something that is constant, and reliable. Question&Answers:os...

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

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c++ - Writing your own STL Container

Are there guidelines on how one should write new container which will behave like any STL container? Question&Answers:os...

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

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php - How create an array from the output of an array printed with print_r?

I have an array: $a = array('foo' => 'fooMe'); and I do: print_r($a); which prints: Array ( [foo] => ... will get the array array('foo' => 'fooMe'); back? Question&Answers:os...

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

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python - PyAudio working, but spits out error messages each time

I'm using PyAudio to record input from the microphone. Since the audio is recording fine for me, should I ... jack server is not running or cannot be started Question&Answers:os...

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

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python - Selenium give file name when downloading

I am working with a selenium script where I am trying to download a Excel file and give it a ... ("Excel").click() # Download file Question&Answers:os...

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

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html - How to detect if two divs touch with jquery?

I'm just developing a simple balloon game with two divs. The problem is that I'm unable to trigger a function when the two divs touch each other. Question&Answers:os...

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

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css - Bootstrap 3 fluid grid layout issues?

Im using Bootstrap 3 to layout my website with fluid grid, but the boxes in the grid don't line up in a row. You can see: ... . </div> </div> <?php } ?> </div> Question&Answers:os...

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

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In Java, is there a way to write a string literal without having to escape quotes?

Say you have a String literal with a lot of quotation marks inside it. You could escape them all, but it ... " string""" Does Java have anything similar? Question&Answers:os...

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

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c++ - Will std::string always be null-terminated in C++11?

In a 2008 post on his site, Herb Sutter states the following: There is an active proposal to tighten this up further ... be safe to use something like &str[0]? Question&Answers:os...

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

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batch file - Which cmd.exe internal commands clear the ERRORLEVEL to 0 upon success?

A frequent method to handling errors within Windows batch scripts is to use things like if errorlevel 1 ... or if ... this Q&A to share what I have found. Question&Answers:os...

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

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Is there a way to use gcc to convert C to MIPS?

I completed a C to MIPS conversion for a class, and I want to check it against the assembly. I have heard that ... I need to know about as well. Thank you. Question&Answers:os...

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

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257 views

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javascript - Hiding the address bar of a browser (popup)

I have to hide the address bar of a browser. I am using this code: var winFeature = 'location=no,toolbar=no, ... article? I am testing in IE and Google Chrome. Question&Answers:os...

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

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277 views

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python - Pygame Drawing a Rectangle

Im making a game that requires knowing how to draw a rectangle in python 3.2. I have checked lot of sources but none show exactly how to do it. Thanks! Question&Answers:os...

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

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java - Hibernate: different object with the same identifier value was already associated with the session

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

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python - How to allow or deny notification geo-location microphone camera pop up

I'm not able to click on Allow button of access camera authentication pop up. Here is the look of pop up. Question&Answers:os...

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

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python - ImportError after successful pip installation

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

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python - Is there any numpy group by function?

Is there any function in numpy to group this array down below by the first column? I couldn't find any good answer ... [605, 468, 692, 613]]], dtype=object) Question&Answers:os...

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

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269 views

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linux - How to invoke a system call via syscall or sysenter in inline assembly?

How can we implement the system call using sysenter/syscall directly in x86 Linux? Can anybody provide help? It ... But still find it difficult to figure out. Question&Answers:os...

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

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sql server - The order of a SQL Select statement without Order By clause

As I know, from the relational database theory, a select statement without an order by clause should be considered to ... ? Anyone can help to explain a little? Question&Answers:os...

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

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c++ - Capturing stdout from a system() command optimally

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

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How to increase the execution timeout in php?

How to increase transaction timeout? I want to upload videos, but large size of videos not uploaded? It throws ... *** exceeded the timeout of 60 seconds. Question&Answers:os...

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

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javascript - How to fix jslint error 'Don't make functions within a loop.'?

I am working on making all of our JS code pass through jslint, sometimes with a lot of tweaking with the ... a way to tweak code like this through jslint? Question&Answers:os...

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

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python - How do I know if a generator is empty from the start?

Is there a simple way of testing if the generator has no items, like peek, hasNext, isEmpty, something along those lines? Question&Answers:os...

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

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