大约有 42,000 项符合查询结果(耗时:0.0465秒) [XML]

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How to convert a factor to integer\numeric without loss of information?

When I convert a factor to a numeric or integer, I get the underlying level codes, not the values as numbers. 10 Answers ...
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Check if current directory is a Git repository

I am writing a series of scripts for Git management in zsh. 14 Answers 14 ...
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When should TaskCompletionSource be used?

AFAIK, all it knows is that at some point, its SetResult or SetException method is being called to complete the Task<T> exposed through its Task property. ...
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jQuery : eq() vs get()

I'm new to jQuery, and I'm wondering what the difference is between jQuery's get() and eq() functions. I may misunderstand what the get() function does, but I thought it odd that I couldn't call a function on the returned on the returned element in the same line. ...
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NUnit vs. MbUnit vs. MSTest vs. xUnit.net [closed]

There are quite a lot of unittesting frameworks out there for .NET. I found this little feature comparison: http://xunit.github.io/docs/comparisons.html ...
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How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?

I have a FILE * , returned by a call to fopen() . I need to get a file descriptor from it, to make calls like fsync(fd) on it. What's the function to get a file descriptor from a file pointer? ...
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SparseArray vs HashMap

I can think of several reasons why HashMap s with integer keys are much better than SparseArray s: 7 Answers ...
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Determine if string is in list in JavaScript

In SQL we can see if a string is in a list like so: 14 Answers 14 ...
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Is there a limit to the length of HTML attributes?

How long is too long for an attribute value in HTML? 8 Answers 8 ...
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Why do I get an UnsupportedOperationException when trying to remove an element from a List?

I have this code: 16 Answers 16 ...