大约有 41,000 项符合查询结果(耗时:0.0495秒) [XML]

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What is the most efficient way to loop through dataframes with pandas? [duplicate]

I want to perform my own complex operations on financial data in dataframes in a sequential manner. 10 Answers ...
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What to do about a 11000 lines C++ source file?

So we have this huge (is 11000 lines huge?) mainmodule.cpp source file in our project and every time I have to touch it I cringe. ...
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#ifdef #ifndef in Java

I doubt if there is a way to make compile-time conditions in Java like #ifdef #ifndef in C++. 8 Answers ...
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What is the Git equivalent for revision number?

We use SVN at work, but for my personal projects I decided to use Git. So I installed Git yesterday, and I wonder what is the revision number equivalent in Git . ...
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Is it a bad practice to use an if-statement without curly braces? [closed]

I've seen code like this: 15 Answers 15 ...
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jsonify a SQLAlchemy result set in Flask [duplicate]

I'm trying to jsonify a SQLAlchemy result set in Flask/Python. 15 Answers 15 ...
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Can I use assert on Android devices?

I want to use the Assert keyword in my android apps to destroy my app in some cases on the emulator, or my device during testing. Is this possible? ...
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When to use static vs instantiated classes

PHP is my first programming language. I can't quite wrap my head around when to use static classes vs instantiated objects. ...
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Can I Replace Apache with Node.js?

I have a website running on CentOS using the usual suspects (Apache, MySQL, and PHP). Since the time this website was originally launched, it has evolved quite a bit and now I'd like to do fancier things with it—namely real-time notifications. From what I've read, Apache handles this poorly. I'm w...
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When and why should I use fragments in Android applications? [duplicate]

I often need the different parts of my applications to have their own special behavior and UI, and I don't know how fragments can help. In most cases, I think it is quicker to create 2 different activities (e.g., 1 for tablets and 1 for handsets), and to share the common behaviors and events in a th...