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Clearing NSUserDefaults

I'm using +[NSUserDefaults standardUserDefaults] to store application settings. This consists of roughly a dozen string values. Is it possible to delete these values permanently instead of just setting them to a default value? ...
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Python: split a list based on a condition?

What's the best way, both aesthetically and from a performance perspective, to split a list of items into multiple lists based on a conditional? The equivalent of: ...
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How many spaces will Java String.trim() remove?

In Java, I have a String like this: 17 Answers 17 ...
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What is the point of “final class” in Java?

I am reading a book about Java and it says that you can declare the whole class as final . I cannot think of anything where I'd use this. ...
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SQL Server equivalent to Oracle's CREATE OR REPLACE VIEW

In Oracle, I can re-create a view with a single statement, as shown here: 9 Answers 9 ...
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filtering NSArray into a new NSArray in Objective-C

I have an NSArray and I'd like to create a new NSArray with objects from the original array that meet certain criteria. The criteria is decided by a function that returns a BOOL . ...
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Extract public/private key from PKCS12 file for later use in SSH-PK-Authentication

I want to extract the public and private key from my PKCS#12 file for later use in SSH-Public-Key-Authentication. 7 Answ...
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bash: pip: command not found

I downloaded pip and ran python setup.py install and everything worked just fine. The very next step in the tutorial is to run pip install <lib you want> but before it even tries to find anything online I get an error "bash: pip: command not found". ...
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Vertical (rotated) label in Android

I need 2 ways of showing vertical label in Android: 10 Answers 10 ...
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Can you explain the concept of streams?

I understand that a stream is a representation of a sequence of bytes. Each stream provides means for reading and writing bytes to its given backing store. But what is the point of the stream? Why isn't the backing store itself what we interact with? ...