大约有 47,000 项符合查询结果(耗时:0.0522秒) [XML]

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What is the meaning of the prefix N in T-SQL statements and when should I use it?

... This denotes that the subsequent string is in Unicode (the N actually stands for National language character set). Which means that you are passing an NCHAR, NVARCHAR or NTEXT value, as opposed to CHAR, VARCHAR or TEXT. To quote from Microsoft: Prefix Unicode character string constants ...
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LaTeX Optional Arguments

How do you create a command with optional arguments in LaTeX? Something like: 6 Answers ...
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Is an entity body allowed for an HTTP DELETE request?

... TRACE requests only, all other request types are unrestricted (section 9, and 9.8 specifically) For responses, this has been defined: whether a message-body is included depends on both request method and response status (section 4.3) a message-body is explicitly forbidden in responses to HEAD r...
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Why does ContentResolver.requestSync not trigger a sync?

...rn as discussed at Google IO - slide 26. My content provider is working, and my sync works when I trigger it from the Dev Tools Sync Tester application, however when I call ContentResolver.requestSync(account, authority, bundle) from my ContentProvider, my sync is never triggered. ...
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Is there a way to check if a file is in use?

... will try to access the file before it's been saved back to the filesystem and throw an error: "File in use by another process" . ...
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What is the difference between '@' and '=' in directive scope in AngularJS?

I've read the AngularJS documentation on the topic carefully, and then fiddled around with a directive. Here's the fiddle . ...
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How can I get “Copy to Output Directory” to work with Unit Tests?

...e the tests are executed the test output is copied to a TestResults folder and then the tests are executed. The issue I'm having is that not all the files in the Debug/bin directory are copied to the TestResults project. ...
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How can I pass a list as a command-line argument with argparse?

I am trying to pass a list as an argument to a command line program. Is there an argparse option to pass a list as option? ...
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How do I get the number of days between two dates in JavaScript?

... Here is a quick and dirty implementation of datediff, as a proof of concept to solve the problem as presented in the question. It relies on the fact that you can get the elapsed milliseconds between two dates by subtracting them, which coerc...
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select and update database record with a single queryset

How do I run an update and select statements on the same queryset rather than having to do two queries: - one to select the object - and one to update the object ...