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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...
What does jQuery.fn mean?
...ery.fn = jQuery.prototype = {
//list of functions available to the jQuery api
}
But the real tool behind fn is its availability to hook your own functionality into jQuery. Remember that jquery will be the parent scope to your function, so this will refer to the jquery object.
$.fn.myExtension = ...
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.
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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...
Convert PDF to clean SVG? [closed]
...es
How to automate extracting pages from a PDF...
JavaScript for Acrobat API Reference - extractPages
Extract pages to separate pdfs (something wrong with loop?)
How can I create a Zerofilled value using JavaScript?
How to output integers with leading zeros in JavaScript
GhostScript references t...
When to use generic methods and when to use wild-card?
... the quote of a book, it is direct and concise
– Kurapika
Feb 12 '18 at 21:21
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Proper package naming for testing with the Go language
...separate package to ensure that you are using the package via the exported API.
If you have a large package with a lot of internals that need to be put under test then use the same package for your tests. But that's not an invitation for your tests to access any bit of private state. That would mak...
Threads vs Processes in Linux
...eans it's available on any Unix systems), if you used the underlying Linux API, which is the clone() system call, then you actually have even more choices in Linux than just the three.
– Lie Ryan
Oct 20 '15 at 14:56
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Differences between .NET 4.0 and .NET 4.5 in High level in .NET
...le apps for Windows 8 using C# or Visual Basic. This subset is called .NET APIs for apps.
The version of .NET Framework, runtime and libraries, used for Metro style apps is a part of the new Windows Runtime, which is the new platform and application model for Metro style apps. It is an ecosystem tha...
Creating threads - Task.Factory.StartNew vs new Thread()
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The task gives you all the goodness of the task API:
Adding continuations (Task.ContinueWith)
Waiting for multiple tasks to complete (either all or any)
Capturing errors in the task and interrogating them later
Capturing cancellation (and allowing you to specify cancella...