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Database design for a survey [closed]

...estions. For example: text fields for comments, multiple choice questions, and possibly questions that could contain more than one answer (i.e. check all that apply). ...
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How do I check if a string contains another string in Objective-C?

..."); } The key is noticing that rangeOfString: returns an NSRange struct, and the documentation says that it returns the struct {NSNotFound, 0} if the "haystack" does not contain the "needle". And if you're on iOS 8 or OS X Yosemite, you can now do: (*NOTE: This WILL crash your app if this code ...
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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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Proper MIME media type for PDF files

When working with PDFs, I've run across the MIME types application/pdf and application/x-pdf among others. 3 Answers ...
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How to use Python's pip to download and keep the zipped files for a package?

If I want to use the pip command to download a package (and its dependencies), but keep all of the zipped files that get downloaded (say, django-socialregistration.tar.gz) - is there a way to do that? ...
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How are multi-dimensional arrays formatted in memory?

...array1 to this function: void function1(int **a); you'll get a warning (and the app will fail to access the array correctly): warning: passing argument 1 of ‘function1’ from incompatible pointer type Because a 2D array is not the same as int **. The automatic decaying of an array into a ...
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Is it good practice to make the constructor throw an exception? [duplicate]

...ke the constructor throw an exception? For example I have a class Person and I have age as its only attribute. Now I provide the class as ...
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Linq: GroupBy, Sum and Count

... I don't understand where the first "result with sample data" is coming from, but the problem in the console app is that you're using SelectMany to look at each item in each group. I think you just want: List<ResultLine> result = Lin...
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SQL Server: Database stuck in “Restoring” state

... You need to use the WITH RECOVERY option, with your database RESTORE command, to bring your database online as part of the restore process. This is of course only if you do not intend to restore any transaction log backups, i.e. you only wish to restore a database backup and then be able to acces...
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How to install an apk on the emulator in Android Studio?

How do you install an apk on the emulator in Android Studio from the terminal? 12 Answers ...