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How to check if mysql database exists
Is it possible to check if a (MySQL) database exists after having made a connection.
21 Answers
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Implementation difference between Aggregation and Composition in Java
I'm aware of the conceptual differences between Aggregation and Composition. Can someone tell me the implementation difference in Java between them with examples?
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Difference between DirectCast() and CType() in VB.NET
I am an experienced C/C++/C# programmer who has just gotten into VB.NET. I generally use CType (and CInt, CBool, CStr) for casts because it is fewer characters and was the first way of casting which I was exposed to, but I am aware of DirectCast and TryCast as well.
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Cleaner way to update nested structures
Say I have got following two case class es:
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Why does this code using random strings print “hello world”?
The following print statement would print "hello world".
Could anyone explain this?
15 Answers
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How to check whether a variable is a class or not?
I was wondering how to check whether a variable is a class (not an instance!) or not.
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How to reload the current state?
I'm using Angular UI Router and would like to reload the current state and refresh all data / re-run the controllers for the current state and it's parent.
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Getting hold of the outer class object from the inner class object
I have the following code. I want to get hold of the outer class object using which I created the inner class object inner . How can I do it?
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Is there any way to call a function periodically in JavaScript?
Is there any way to call a function periodically in JavaScript?
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Why are there two ways to unstage a file in Git?
Sometimes git suggests git rm --cached to unstage a file, sometimes git reset HEAD file . When should I use which?
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