大约有 42,000 项符合查询结果(耗时:0.0795秒) [XML]

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Check for changes to an SQL Server table?

...of the database in any way? My preferred programming environment is .NET and C#. 8 Answers ...
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Getting the array length of a 2D array in Java

I need to get the length of a 2D array for both the row and column. I’ve successfully done this, using the following code: ...
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C++ error: undefined reference to 'clock_gettime' and 'clock_settime'

...ut I can't seem to get this to work. It works fine on my school computers and I don't know what I am not doing. I have checked usr/include and time.h is there just fine. Here is the code: ...
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Convert string to title case with JavaScript

...r example? I don't know, why you would want to include anything but spaces and therefore change Jim-Bob to Jim-bob. – martinczerwi Jan 9 '13 at 9:17 ...
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How do I center floated elements?

I'm implementing pagination, and it needs to be centered. The problem is that the links need to be displayed as block, so they need to be floated. But then, text-align: center; doesn't work on them. I could achieve it by giving the wrapper div padding of left, but every page will have a different ...
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pandas GroupBy columns with NaN (missing) values

...the same placeholder hack). However, as described in another answer, from pandas 1.1 you have better control over this behavior, NA values are now allowed in the grouper using dropna=False share | i...
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How can I handle the warning of file_get_contents() function in PHP?

... Step 1: check the return code: if($content === FALSE) { // handle error here... } Step 2: suppress the warning by putting an error control operator (i.e. @) in front of the call to file_get_contents(): $content = @file_get_contents($site); ...
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Confused about __str__ on list in Python [duplicate]

Coming from a Java background, I understand that __str__ is something like a Python version of toString (while I do realize that Python is the older language). ...
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What differences, if any, between C++03 and C++11 can be detected at run-time?

...to write a function, which, when compiled with a C compiler will return 0, and when compiled with a C++ compiler, will return 1 (the trivial sulution with #ifdef __cplusplus is not interesting). ...
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Why are ToLookup and GroupBy different?

...table with a billion rows in it? The billion rows are sent over the wire, and you build the lookup table locally. What happens when you call GroupBy on such an object? A query object is built; end of story. When that query object is enumerated then the analysis of the table is done on the databa...