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How to get the current date and time
How do I get the current date and time in Java?
10 Answers
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What is Castle Windsor, and why should I care?
I'm a long-time Windows developer, having cut my teeth on win32 and early COM. I've been working with .NET since 2001, so I'm pretty fluent in C# and the CLR. I'd never heard of Castle Windsor until I started participating in Stack Overflow. I've read the Castle Windsor "Getting Started" guide, b...
What is the difference between gravity and layout_gravity in Android?
I know we can set the following values to the android:gravity and android:layout_gravity properties:
20 Answers
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iOS 7 - How to display a date picker in place in a table view?
...uggests displaying picker in place in a table view in iOS 7. How to insert and animate a view between table view cells?
13 ...
Java8 Lambdas vs Anonymous classes
Since Java8 has been recently released and its brand new lambda expressions looks to be really cool, I was wondering if this means the demise of the Anonymous classes that we were so used to.
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What is an existential type?
... type parameter. Second, invert control (this effectively swaps the "you" and "I" part in the definitions above, which is the primary difference between existentials and universals).
// A wrapper that hides the type parameter 'B'
interface VMWrapper {
void unwrap(VMHandler handler);
}
// A cal...
How do I remove a submodule?
...le (no trailing slash)
# or, if you want to leave it in your working tree and have done step 0
3. git rm --cached a/submodule
3bis mv a/submodule_tmp a/submodule
Explanation
rm -rf: This is mentioned in Daniel Schroeder's answer, and summarized by Eonil in the comments:
This leaves .git/mo...
Is there a difference between foreach and map?
...n a particular language, but is there a difference between a map operation and a foreach operation? Or are they simply different names for the same thing?
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Check if pull needed in Git
How do I check whether the remote repository has changed and I need to pull?
24 Answers
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When to use Common Table Expression (CTE)
I have begun reading about Common Table Expression and cannot think of a use case where I would need to use them. They would seem to be redundant as the same can be done with derived tables. Is there something I am missing or not understanding well? Can someone give me a simple example of limitati...