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ActiveRecord, has_many :through, and Polymorphic Associations
...owever, is there any way to accomplish this these days without source_type and two separate associations?
– Emeka
Feb 27 '16 at 15:27
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Where does this come from: -*- coding: utf-8 -*-
... answered Feb 2 '11 at 8:33
Andrea SpadacciniAndrea Spadaccini
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Can I use an OR in regex without capturing what's enclosed?
I'm using rubular.com to build my regex, and their documentation describes the following:
4 Answers
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Obtain Bundle Identifier programmatically
...ing of reading the answer then in the comment, see something like @Jonny s and Tim (although you can see this in another whole answer), it links to something else that still relevant and useful. Thanks for great community guys.
– haxpor
Mar 2 '15 at 0:47
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What's the difference between RouteLink and ActionLink in ASP.NET MVC?
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Action and Routes don't have to have a 1:1 relationship.
ActionLink will generate the URL to get to an action using the first matching route by action name.
RouteLink will generate a URL to a specific route determined either by na...
Difference between Service, Async Task & Thread?
...em are used to do some stuff in background. So, how to decide which to use and when?
6 Answers
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Checking whether a variable is an integer or not [duplicate]
...orphism: you should allow any object that behaves like an int, instead of mandating that it be one.
BUT
The classical Python mentality, though, is that it's easier to ask forgiveness than permission. In other words, don't check whether x is an integer; assume that it is and catch the exception resul...
SQL set values of one column equal to values of another column in the same table
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UPDATE YourTable
SET ColumnB=ColumnA
WHERE
ColumnB IS NULL
AND ColumnA IS NOT NULL
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What is `params.require(:person).permit(:name, :age)` doing in Rails 4?
...tionController::Parameters, which provides several methods such as require and permit.
The require method ensures that a specific parameter is present, and if it's not provided, the require method throws an error. It returns an instance of ActionController::Parameters for the key passed into requi...
Will Dispose() be called in a using statement with a null object?
... Note that even if your variable is null, the using block is executed, and if you reference your variable inside the using block without first null-checking it, you WILL get NullReferenceException. To prevent misinterpretation, this answer should state: "Yes, Dispose() is only called on non-null...