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Eager load polymorphic

...ions are only supported by preload. It's in the documentation here: http://api.rubyonrails.org/v5.1/classes/ActiveRecord/EagerLoadPolymorphicError.html So always use preload for polymorphic associations. There is one caveat for this: you cannot query the polymorphic assocition in where clauses (whi...
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How to perform OR condition in django queryset?

...Update 2019-06-20: This is now fully documented in the Django 2.1 QuerySet API reference. More historic discussion can be found in DjangoProject ticket #21333. share | improve this answer |...
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How to use WinForms progress bar?

...il here: Async in 4.5: Enabling Progress and Cancellation in Async APIs Reporting Progress from Async Tasks by Stephen Cleary Task parallel library replacement for BackgroundWorker? share | ...
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Enabling auto layout in iOS 6 while remaining backwards compatible with iOS 5

...verify your claims before posting. iOS 5 simply does not have the required APIs (such as the class NSLayoutConstraint). If you don't believe me, check out what other users experience when they try to use Autolayout with iOS 5: stackoverflow.com/questions/11252057/… stackoverflow.com/questions/1119...
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java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare();

... Isn't that a Xamarin specific API and not related to this question about Android Native (w/o Xamarin tags)? – Splaktar Oct 3 '16 at 22:32 ...
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Remove Fragment Page from ViewPager in Android

...: Note this class is currently under early design and development. The API will likely change in later updates of the compatibility library, requiring changes to the source code of apps when they are compiled against the newer version. So hopefully the workaround given here will not be necessa...
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How do I trigger the success callback on a model.save()?

... For some unknown reason, none of the above method worked for me. The api only was not hit in my case. But later while searching on this, I bumped into this link, where some one had tried null instead of {} as the first parameter. this.model.save(null, { success: function (model, response...
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How can I make my custom objects Parcelable?

...input); Parceler in Gradle dependencies: compile "org.parceler:parceler-api:${parceler.version}" provided "org.parceler:parceler:${parceler.version}" Look in README for supported attribute types. AutoParcel AutoParcel is an AutoValue extension that enables Parcelable values generation. Jus...
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What is the use of a private static variable in Java?

...utable types. Everything else should be private for the sake of separating API and implementation (amongst other things). share | improve this answer | follow ...
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What are MVP and MVC and what is the difference?

...bstraction and complete isolation of any GUI related (view stuff) from the API of the presenter. One minor point: A master presenter could be used where there is only one presenter, rather than one per view, but your diagram is the cleanest. IMO, the biggest difference between MVC/MVP is that MVP ...