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algorithm - Why is quicksort better than mergesort?

I was asked this question during an interview. They're both O(nlogn) and yet most people use Quicksort instead of Mergesort. Why is that? Question&Answers:os...

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

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200 views

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asp.net - <%$, <%@, <%=, <%# ... what's the deal?

I've programmed in both classic ASP and ASP.NET, and I see different tags inside of the markup for ... different tags that seemingly have a similar purpose? Question&Answers:os...

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

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301 views

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java - How to activate JMX on my JVM for access with jconsole?

How to activate JMX on a JVM for access with jconsole? Question&Answers:os...

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

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Why do I have to "git push --set-upstream origin <branch>"?

I created a local branch for testing Solaris and Sun Studio. I then pushed the branch upstream. After ... det-sig remotes/origin/master remotes/origin/solaris Question&Answers:os...

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

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129 views

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Why is Node.js single threaded?

Closed. This question is opinion-based. 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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157 views

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Automatic exit from Bash shell script on error

This question already has answers here: Question&Answers:os...

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

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javascript - jQuery pass more parameters into callback

Is there a way to pass more data into a callback function in jQuery? I have two functions and I want the ... well as the result returned from the AJAX call. Question&Answers:os...

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

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343 views

1 answer

Use Font Awesome Icons in CSS

I have some CSS that looks like this: #content h2 { background: url(../images/tContent.jpg) no-repeat 0 ... Awesome stylesheets/fonts are loaded before my CSS? Question&Answers:os...

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

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102 views

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Fastest way to check if a string is JSON in PHP?

I need a really, really fast method of checking if a string is JSON or not. I feel like this is ... enthusiasts out there want to improve this method? Question&Answers:os...

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

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279 views

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data structures - Reversing a linked list in Java, recursively

I have been working on a Java project for a class for a while now. It is an implementation of a linked ... here, does anyone see any problems with this route? Question&Answers:os...

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

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192 views

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android - What to use instead of "addPreferencesFromResource" in a PreferenceActivity?

I just noticed the fact that the method addPreferencesFromResource(int preferencesResId) is marked deprecated in ... .xml to the matching PreferenceActivity? Question&Answers:os...

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

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javascript - What does the @ mean inside an import path?

I'm starting out a new vue.js project so I used the vue-cli tool to scaffold out a new webpack project (i. ... (which you normally need). Thanks for the help! Question&Answers:os...

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

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1 answer

sql - How to select rows with no matching entry in another table?

I'm doing some maintenance work on a database application and I've discovered that, joy of joys, even though ... in this mess that has no FK constraints? Question&Answers:os...

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

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321 views

1 answer

MongoDB logging all queries

The question is as basic as it is simple... How do you log all queries in a "tail"able log file in ... showing just the current number of active connections... Question&Answers:os...

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

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356 views

1 answer

What's the difference between "Normal Reload", "Hard Reload", and "Empty Cache and Hard Reload" in Chrome?

I recently discovered this new feature in Chrome: I can figure out the difference between option 1 and option 3, ... precise behavior of each of the 3 options? Question&Answers:os...

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

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1.6k views

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django - Setting DEBUG = False causes 500 Error

Once I change the DEBUG = False, my site will generate 500 (using wsgi & manage.py runserver), and there is no error ... 'zdm', 'portal', 'admin', 'tagging', ) Question&Answers:os...

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

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382 views

1 answer

jquery - $(window).width() not the same as media query

I am using Twitter Bootstrap on a project. As well as the default bootstrap styles I have also added some of ... browsers will have a scrollbar width of 16px? Question&Answers:os...

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

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84 views

1 answer

How to search for a part of a word with ElasticSearch

I've recently started using ElasticSearch and I can't seem to make it search for a part of a word. ... documentation on using nGram isn't great... Question&Answers:os...

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

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208 views

1 answer

html - How to make a <div> always full screen?

No matter how its content is like. Is it possible to do this? Question&Answers:os...

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

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135 views

1 answer

How to find out what type of a Mat object is with Mat::type() in OpenCV

I am kind of confused with type() method of Mat object in OpenCV. If I have following lines: mat = imread("C: ... its manual or in a couple of books in vain. Question&Answers:os...

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

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258 views

1 answer

How to sequentially run promises with Q in Javascript?

I am having a hard time running promises sequentially. var getDelayedString = function(string) { var deferred = Q.defer() ... 2/ Any idea what I am doing wrong? Question&Answers:os...

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

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221 views

1 answer

Checking the success of a command in a bash `if [ .. ]` statement

I am trying to automate our application backup. Part of the process is to check the exit status of egrep in ... me in understanding where I am going wrong. Question&Answers:os...

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

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148 views

1 answer

java - How cancel the execution of a SwingWorker?

Currently I have two SwingWorker threads doing job on background. If an exception occurs, the method stop to work, but the ... ?o //*em execu??o = in execution Question&Answers:os...

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

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106 views

1 answer

c - Locks around memory manipulation via inline assembly

I am new to the low level stuff so I am completely oblivious of what kind of problems you might face ... atomic operation because it is only one instruction? Question&Answers:os...

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

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305 views

1 answer

Does Rust free up the memory of overwritten variables?

I saw in the Rust book that you can define two different variables with the same name: let hello = "Hello"; let ... it 100 lines below it could be a real pain. Question&Answers:os...

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

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121 views

1 answer

c# - Weird Error Upgrading ASP.NET MVC from 4 to 5

I'm converting my project from MVC 4 to MVC 5 (and .Net 4 to .Net 4.5.2, which is the real driver of ... ? How do I prevent it happening again? Thanks, Eric- Question&Answers:os...

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

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181 views

1 answer

css - Text blended over background color

I'm trying to style a progress bar which looks like this: The left part can have different colors (green, orange, etc ... ="text">Some text here</div> </div> Question&Answers:os...

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

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305 views

1 answer

python - Any way to modify locals dictionary?

locals is a built in function that returns a dictionary of local values. The documentation says: Warning The ... them into the locals. Is this possible? Question&Answers:os...

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

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