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How to delete an item in a list if it exists?

I am getting new_tag from a form text field with self.response.get("new_tag") and selected_tags from checkbox fields with ...
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Class does not implement its superclass's required members

So I updated to Xcode 6 beta 5 today and noticed I received errors in nearly all of my subclasses of Apple's classes. 4 Ans...
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What's so bad about Template Haskell?

It seems that Template Haskell is often viewed by the Haskell community as an unfortunate convenience. It's hard to put into words exactly what I have observed in this regard, but consider these few examples ...
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Count the number of occurrences of a character in a string in Javascript

I need to count the number of occurrences of a character in a string. 33 Answers 33 ...
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Regex doesn't work in String.matches()

I have this small piece of code 9 Answers 9 ...
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When is std::weak_ptr useful?

I started studying smart pointers of C++11 and I don't see any useful use of std::weak_ptr . Can someone tell me when std::weak_ptr is useful/necessary? ...
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What are metaclasses in Python?

In Python, what are metaclasses and what do we use them for? 22 Answers 22 ...
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Are getters and setters poor design? Contradictory advice seen [duplicate]

I'm currently working on a simple game in Java with several different modes. I've extended a main Game class to put the main logic within the other classes. Despite this, the main game class is still pretty hefty. ...
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GetType() can lie?

Based on the following question asked a few days ago in SO: GetType() and polymorphism and reading Eric Lippert's answer, I started thinking if making GetType() not be virtual really ensured that an object could not lie about its Type . ...
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AngularJS : When to use service instead of factory

However I still can't figure out when you'd use service over factory. 9 Answers 9 ...