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Why does Java's hashCode() in String use 31 as a multiplier?
...to Joshua Bloch's Effective Java (a book that can't be recommended enough, and which I bought thanks to continual mentions on stackoverflow):
The value 31 was chosen because it is an odd prime. If it were even and the multiplication overflowed, information would be lost, as multiplication by 2 i...
'Must Override a Superclass Method' Errors after importing a project into Eclipse
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Eclipse is defaulting to Java 1.5 and you have classes implementing interface methods (which in Java 1.6 can be annotated with @Override, but in Java 1.5 can only be applied to methods overriding a superclass method).
Go to your project/IDE preferences and s...
What are unit tests, integration tests, smoke tests, and regression tests?
What are unit tests, integration tests, smoke tests, and regression tests? What are the differences between them and which tools can I use for each of them?
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What is the difference between FragmentPagerAdapter and FragmentStatePagerAdapter?
What is the difference between FragmentPagerAdapter and FragmentStatePagerAdapter ?
7 Answers
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Resolve absolute path from relative path and/or file name
...batch script to return an absolute path from a value containing a filename and/or relative path?
14 Answers
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Difference between class and type
Being new to Java, I'm confused between the concepts of class and type .
For example, should the object "Hello World!" belong to the type String or class String ? Or maybe both?
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Generating v5 UUID. What is name and namespace?
I've read the man page, but I do not undestand what name and namespace are for.
3 Answers
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CocoaPods Errors on Project Build
... major changes to my Podfile. My solution was to remove the workspace file and run pod install again:
rm -rf MyProject.xcworkspace
pod install
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Using Emacs to recursively find and replace in text files not already open
...ld be easy, that especially stops me from getting more used to using Emacs and instead starting up the editor I'm already familiar with. I use the example here fairly often in editing multiple files.
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When do I need to use Begin / End Blocks and the Go keyword in SQL Server?
Can someone tell me when and where I need to use begin and end blocks in SQL Server?
Also, what exactly does the Go keyword do?
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