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Does every Core Data Relationship have to have an Inverse?

...alAppType. The relationship is non-optional and has a "deny" delete rule. Now consider the following: SocialApp *socialApp; SocialAppType *appType; // assume entity instances correctly instantiated [socialApp setSocialAppType:appType]; [managedObjectContext deleteObject:appType]; BOOL saved = [ma...
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Reset select2 value and show placeholder

...er Select2 versions. Use $element.val() instead. The best way to do this now is: $('#your_select_input').val(''); Edit: December 2016 Comments suggest that the below is the updated way to do this: $('#your_select_input').val([]); ...
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undefined reference to boost::system::system_category() when compiling

...y's features). Starting from Boost 1.66 and this commit, this behavior is now the default, so hopefully fewer and fewer users should need this answer. As noticed by @AndrewMarshall, an alternative is to define BOOST_ERROR_CODE_HEADER_ONLY which enables a header-only version of the code. This was d...
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In Java, what does NaN mean?

... Minimal runnable example The first thing that you have to know, is that the concept of NaN is implemented directly on the CPU hardware. All major modern CPUs seem to follow IEEE 754 which specifies floating point formats, and NaNs, which are just special float values, are part of th...
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How can I display a list view in an Android Alert Dialog?

... This is great, now add icons ;) – AaA Aug 14 '17 at 10:49 1 ...
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What is the use of hashCode in Java?

... Thank you Aishu. Now I got clear knowledge about the hashcode with bucket related explanation. – Balasubramani May 16 '15 at 3:02 ...
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The EXECUTE permission was denied on the object 'xxxxxxx', database 'zzzzzzz', schema 'dbo'

... Hi, I know it was a bit time ago, but I have a question. Might such action have some security problems? Does it opens sp to be used for everyone? – Valentyn Vynogradskiy Aug 4 '14 at 10:39 ...
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How to shift a column in Pandas DataFrame

... do it from the documentation without rewriting the whole DF. Does anyone know how to do it? DataFrame: 7 Answers ...
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Unable to authenticate with Git Bash to Visual Studio Team Services

... Thanks for this! Any one know how to store the credentials so I don't have to enter them over and over? – Erick Brown Dec 3 '14 at 3:50 ...
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Web-scraping JavaScript page with Python

... discontinued and is no longer under active development in light of Chrome now supporting headless. Use of headless chrome/firefox is suggested. – sytech Mar 23 '18 at 20:42 3 ...