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What are the differences between B trees and B+ trees?
In a b-tree you can store both keys and data in the internal and leaf nodes , but in a b+ tree you have to store the data in the leaf nodes only .
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How to version control a record in a database
Let's say that I have a record in the database and that both admin and normal users can do updates.
11 Answers
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How to explain dependency injection to a 5-year-old? [closed]
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I give you dependency injection for five-year-olds.
When you go and get things out of the refrigerator for yourself, you can cause problems. You might leave the door open, you might get something Mommy or Daddy doesn't want you to have. You might even be looking for something we don't eve...
Getting “cannot find Symbol” in Java project in Intellij
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@JustinHill - I am well versed with eclipse and new to IntelliJ. Can you help me with respects to what's the difference between the two and any points/links that help me settle my time with IntellJ.
– nanosoft
Feb 16 '19 at 13:06
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The project file has been moved renamed or is not on your computer
...start Visual Studio after deleting the .suo file
– orandov
Jun 11 '12 at 13:45
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Oh. So now the ....
Preferred way to create a Scala list
...example code below). You can use a mutable ListBuffer, create a var list and modify it, use a tail recursive method, and probably others that I don't know about.
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What is a C++ delegate?
...is the general idea of a delegate in C++? What are they, how are they used and what are they used for?
6 Answers
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IntelliJ does not show 'Class' when we right click and select 'New'
We're creating a new project in IntelliJ and must have something wrong because when we right click on a directory, select New and then get the context menu, Java based options are not shown. Currently get things like File, some HTML options, XML options.
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Why should I prefer to use member initialization lists?
... this case, the constructor for B will call the default constructor for A, and then initialize a.x to 3. A better way would be for B's constructor to directly call A's constructor in the initializer list:
B()
: a(3)
{
}
This would only call A's A(int) constructor and not its default constructo...
Is there any way to git checkout previous branch?
... sort of want the equivalent of cd - for git. If I am in branch master and I checkout foo , I would love to be able to type something like git checkout - to go back to master , and be able to type it again to return to foo .
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