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how to permit an array with strong parameters
I have a functioning Rails 3 app that uses has_many :through associations which is not, as I remake it as a Rails 4 app, letting me save ids from the associated model in the Rails 4 version.
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How do I shuffle an array in Swift?
How do I randomize or shuffle the elements within an array in Swift? For example, if my array consists of 52 playing cards, I want to shuffle the array in order to shuffle the deck.
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What is the purpose of Looper and how to use it?
I am new to Android. I want to know what the Looper class does and also how to use it. I have read the Android Looper class documentation but I am unable to completely understand it.
I have seen it in a lot of places but unable to understand its purpose. Can anyone help me by defining the purpos...
Is there a simple way to remove multiple spaces in a string?
Suppose this string:
29 Answers
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Namespace + functions versus static methods on a class
Let's say I have, or am going to write, a set of related functions. Let's say they're math-related. Organizationally, should I:
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dealloc in Swift
I would like to perform some cleanup at the end of a view controller's life, namely to remove an NSNotificationCenter notification. Implementing dealloc results in a Swift compiler error:
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How do I vertically center text with CSS? [duplicate]
I have a <div> element which contains text and I want to align the contents of this <div> vertically center.
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Concatenate two string literals
I am reading Accelerated C++ by Koenig. He writes that "the new idea is that we can use + to concatenate a string and a string literal - or, for that matter, two strings (but not two string literals).
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Static methods in Python?
Is it possible to have static methods in Python which I could call without initializing a class, like:
10 Answers
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How to override equals method in Java
I am trying to override equals method in Java. I have a class People which basically has 2 data fields name and age . Now I want to override equals method so that I can check between 2 People objects.
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