大约有 41,000 项符合查询结果(耗时:0.0491秒) [XML]

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Why are dashes preferred for CSS selectors / HTML attributes?

In the past I've always used underscores for defining class and id attributes in HTML. Over the last few years I changed over to dashes, mostly to align myself with the trend in the community , not necessarily because it made sense to me. ...
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map vs. hash_map in C++

I have a question with hash_map and map in C++. I understand that map is in STL, but hash_map is not a standard. What's the difference between the two? ...
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Can you explain the HttpURLConnection connection process?

... a web service. I know how to use HTTPURLConnection but I want to understand how it works. Basically, I want to know the following: ...
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What does 'const static' mean in C and C++?

I saw this in some code here on StackOverflow and I couldn't figure out what it does. Then I saw some confused answers on other forums. My best guess is that it's used in C to hide the constant foo from other modules. Is this correct? If so, why would anyone use it in a C++ context where you can j...
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What is the difference between declarative and imperative programming? [closed]

I have been searching the web looking for a definition for declarative and imperative programming that would shed some light for me. However, the language used at some of the resources that I have found is daunting - for instance at Wikipedia . Does anyone have a real-world example that they could ...
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In Python, when to use a Dictionary, List or Set?

... A list keeps order, dict and set don't: when you care about order, therefore, you must use list (if your choice of containers is limited to these three, of course;-). dict associates with each key a value, while list and set just contain values: ver...
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What is the basic difference between the Factory and Abstract Factory Design Patterns? [closed]

What is the basic difference between the Factory and Abstract Factory Patterns? 19 Answers ...
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Why doesn't Dijkstra's algorithm work for negative weight edges?

... Recall that in Dijkstra's algorithm, once a vertex is marked as "closed" (and out of the open set) - the algorithm found the shortest path to it, and will never have to develop this node again - it assumes the path developed to this path is the shortest. But with negative weights - it might not be...
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Which encoding opens CSV files correctly with Excel on both Mac and Windows?

...s CSV files containing foreign characters with UTF-8, no BOM. Both Windows and Mac users get garbage characters in Excel. I tried converting to UTF-8 with BOM; Excel/Win is fine with it, Excel/Mac shows gibberish. I'm using Excel 2003/Win, Excel 2011/Mac. Here's all the encodings I tried: ...
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What are the pros and cons of both Jade and EJS for Node.js templating? [closed]

Jade versus EJS, what are the pros and cons of each and what purposes are each designed for? 2 Answers ...