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SQL DROP TABLE foreign key constraint

...ferencing your table, you could use this SQL (if you're on SQL Server 2005 and up): SELECT * FROM sys.foreign_keys WHERE referenced_object_id = object_id('Student') and if there are any, with this statement here, you could create SQL statements to actually drop those FK relations: SELECT '...
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动态追踪(Dynamic Tracing)技术漫谈 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术

...于 21 世纪初诞生于 Solaris 操作系统,是由原来的 Sun Microsystems 公司的工程师编写的。可能很多同学都听说过 Solaris 系统和 Sun 公司的大名。 最初产生的时候,我记得有这样一个故事,当时 Solaris 操作系统的几个工程师花了几天...
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Meaning of Choreographer messages in Logcat [duplicate]

I installed the latest versions of SDK (API 16) and got the latest ADT. I'm now seeing these messages in the logcat, that I'm quite sure, I haven't seen before. Does anyone have an idea about this? ...
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std::wstring VS std::string

I am not able to understand the differences between std::string and std::wstring . I know wstring supports wide characters such as Unicode characters. I have got the following questions: ...
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How to find all positions of the maximum value in a list?

... 0 for this is 2n, the list is iterated through 2x, once to determine max, and another time to find the positions of the max. A for loop that tracks the current max and its position might be more efficient for really long lists. – radtek Jan 8 '15 at 18:42 ...
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Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]

...s a more complete version that shows more differences between [ (aka test) and [[. The following table shows that whether a variable is quoted or not, whether you use single or double brackets and whether the variable contains only a space are the things that affect whether using a test with or wit...
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How to programmatically clear application data

I am developing automated tests for an android application (using Robotium). In order to ensure the consistency and reliability of tests, I would like to start each test with clean state (of the application under test). In order to do so, I need to clear the app data. This can be done manually in Se...
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ImportError: No module named matplotlib.pyplot

... You have two pythons installed on your machine, one is the standard python that comes with Mac OSX and the second is the one you installed with ports (this is the one that has matplotlib installed in its library, the one that comes with macosx does not). /usr/bin/python Is the stand...
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How to change checkbox's border style in CSS?

...mething happens in any browser I'd be surprised. This is one of those outstanding form elements that browsers tend not to let you style that much, and that people usually try to replace with javascript so they can style/code something to look and act like a checkbox. ...
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Type converting slices of interfaces

... exception to this rule is converting strings. When converting a string to and from a []byte or a []rune, Go does O(n) work even though conversions are "syntax". There is no standard library function that will do this conversion for you. You could make one with reflect, but it would be slower than ...