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What is an invariant?
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An invariant is more "conceptual" than a variable. In general, it's a property of the program state that is always true. A function or method that ensures that the invariant holds is said to maintain the invariant.
For instance, a binary search tree might have the invariant that for eve...
Difference between initLoader and restartLoader in LoaderManager
I'm completely lost regarding the differences between the initLoader and the restartLoader functions of the LoaderManager :
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What is wrong with using goto? [duplicate]
...e negative texts about them some years ago):
What is actually wrong with it? Why are goto's even possible in C++ then?
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What's the reason I can't create generic array types in Java?
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It's because Java's arrays (unlike generics) contain, at runtime, information about its component type. So you must know the component type when you create the array. Since you don't know what T is at runtime, you can't creat...
How to order citations by appearance using BibTeX?
By default (using the plain style) BibTeX orders citations alphabetically.
12 Answers
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Unable to find the wrapper “https” - did you forget to enable it when you configured PHP?
...'ll list out exactly everything I've done so far. I am running PHP 5.2.14 with Zend Debugging on the latest Eclipse version on my Windows XP computer. I have a 1 GB of RAM. I have XAMPP running with Apache, MySQL, and FileZilla installed.
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When to use UICollectionView instead of UITableView?
I found that UICollectionView is like an upgraded version of UITableView introduced in iOS6, but when should I choose UICollectionView instead of UITableView ?
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What is the significance of #pragma marks? Why do we need #pragma marks?
...to methods. They have no impact on the program at all.
For example, using it with Xcode 4 will make those items appear directly in the Jump Bar.
There is a special pragma mark - which creates a line.
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Where is the Keytool application?
...control in android and I can't seem to understand how to run keytool .
Is it installed with eclipse? I can't seem to find a download link.
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How to get the caller's method name in the called method?
...me: f1
this introspection is intended to help debugging and development; it's not advisable to rely on it for production-functionality purposes.
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