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Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?

I've been wrestling with this for a while and can't quite figure out what's happening. I have a Card entity which contains Sides (usually 2) - and both Cards and Sides have a Stage. I'm using EF Codefirst migrations and the migrations are failing with this error: ...
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How to sleep for five seconds in a batch file/cmd [duplicate]

...ds, such as taking an image being displayed by the webcam. (Run the script and smile at the camera, for example.) 30 Answer...
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Detecting endianness programmatically in a C++ program

... need to be able to write code that will execute on an Intel or PPC system and use exactly the same code (i.e. no conditional compilation). ...
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How do I set the proxy to be used by the JVM

...e Internet. The most common example happens when it is reading an XML file and needs to download its schema. 19 Answers ...
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How to highlight cell if value duplicate in same column for google spreadsheet?

...A100). Click Done Anything written in the A1:A100 cells will be checked, and if there is a duplicate (occurs more than once) then it'll be coloured. For locales using comma (,) as a decimal separator, the argument separator is most likely a semi-colon (;). That is, try: =countif(A:A;A1)>1, ins...
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A html space is showing as %2520 instead of %20

... as %25. The way you get %2520 is when your url already has a %20 in it, and gets urlencoded again, which transforms the %20 to %2520. Are you (or any framework you might be using) double encoding characters? Edit: Expanding a bit on this, especially for LOCAL links. Assuming you want to link t...
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400 vs 422 response to POST of data

...est HTTP/1.1 status code for your use case. At the time of your question (and my original answer), RFC 7231 was not a thing; at which point I objected to 400 Bad Request because RFC 2616 said (with emphasis mine): The request could not be understood by the server due to malformed syntax. and ...
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What are detached, persistent and transient objects in hibernate?

What are detached, persistent and transient objects in hibernate? Please explain with an example. 5 Answers ...
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Where to find Java JDK Source Code? [closed]

... official source code in it. I just had to tell Eclipse where this file is and I could see the code. But now I don't have the file anymore... ...
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How to use concerns in Rails 4

...4 project generator now creates the directory "concerns" under controllers and models. I have found some explanations about how to use routing concerns, but nothing about controllers or models. ...