大约有 40,000 项符合查询结果(耗时:0.0482秒) [XML]

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Can I create a One-Time-Use Function in a Script or Stored Procedure?

...nderstand the security implications before you consider this. DECLARE @add_a_b_func nvarchar(4000) = N'SELECT @c = @a + @b;'; DECLARE @add_a_b_parm nvarchar(500) = N'@a int, @b int, @c int OUTPUT'; DECLARE @result int; EXEC sp_executesql @add_a_b_func, @add_a_b_parm, 2, 3, @c = @result OUTPUT; PRI...
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What is the python keyword “with” used for? [duplicate]

...t in an object that supports the context management protocol (that is, has __enter__() and __exit__() methods). Update fixed VB callout per Scott Wisniewski's comment. I was indeed confusing with with using. share ...
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Spring Data: “delete by” is supported?

... Typically, in an application, you will have @ Service classes/methods and those will be calling the Repositories. And @ Service public methods should be the methods that are marked @ Transactional because transactions are Use Case...
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How can I specify working directory for popen

...wd, import os and define cwd using this: os.path.dirname(os.path.realpath(__file__)) share | improve this answer | follow | ...
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Why does C# forbid generic attribute types?

...pful information either, although it does provide an example of what's not allowed. My copy of the annotated C# 3 spec should arrive tomorrow... I'll see if that gives any more information. Anyway, it's definitely a language decision rather than a runtime one. EDIT: Answer from Eric Lippert (parap...
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Test parameterization in xUnit.net similar to NUnit

... xUnit offers a way to run parameterized tests through something called data theories. The concept is equivalent to the one found in NUnit but the functionality you get out of the box is not as complete. Here's an example: [Theory] [InlineData("Foo")] [InlineData(9)] [InlineData(true)] pu...
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Deleting Objects in JavaScript

...a C++ delete. (And accessing one of them would cause a crash. To make them all turn null would mean having extra work when deleting or extra memory for each object.) Since Javascript is garbage collected, you don't need to delete objects themselves - they will be removed when there is no way to ref...
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Handling applicationDidBecomeActive - “How can a view controller respond to the app becoming Active?

...tionDidBecomeActiveNotification and specify which method that you want to call when that notification gets sent to your application. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(someMethod:) ...
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json_encode is returning NULL?

...ser didn't solve my problem. For those in same situation, here is how I finally handled this error: Just utf8_encode each of your results. while($row = mysql_fetch_assoc($result)){ $rows[] = array_map('utf8_encode', $row); } Hope it helps! ...
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Find most frequent value in SQL column

... SELECT `column`, COUNT(`column`) AS `value_occurrence` FROM `my_table` GROUP BY `column` ORDER BY `value_occurrence` DESC LIMIT 1; Replace column and my_table. Increase 1 if you want to see the N most common values of the column. ...