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How to ignore all hidden directories/files recursively in a git repository?
...n to .gitignore
.*
!/.gitignore
Edit: Added the .gitignore file itself (matters if it is not yet commited).
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B-Tree vs Hash Table
In MySQL, an index type is a b-tree, and access an element in a b-tree is in logarithmic amortized time O(log(n)) .
5 Answ...
Kill child process when parent process is killed
I'm creating new processes using System.Diagnostics.Process class from my applim>cat m>ion. I want this processes to be killed when/if my applim>cat m>ion has crashed. But if I kill my applim>cat m>ion from Task Manager, child processes are not killed. Is there any way to make child processes dependent on ...
rotating axis labels in R
In R, how do I make a (bar)plot's y axis labels parallel to the X axis instead of parallel to the Y axis?
5 Answers
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CROSS JOIN vs INNER JOIN in SQL
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Cross join does not combine the rows, if you have 100 rows in each table with 1 to 1 match, you get 10.000 results, Innerjoin will only return 100 rows in the same situation.
These 2 examples will return the same result:
Cross join
select * fro...
The type must be a reference type in order to use it as parameter 'T' in the generic type or method
I'm getting deeper into generics and now have a situation I need help with. I get a compile error on the 'Derived' class below as shown in the subject title. I see many other posts similar to this one but I'm not seeing the relationship. Can someone tell me how to resolve this?
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Foreign Key to multiple tables
I've got 3 relevant tables in my database.
5 Answers
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How to copy yanked text to VI command prompt
...want to know if there is any way by which I can paste yanked text to the command window. For instance if I have yanked a word and I want to grep it in some lom>cat m>ion I can't simply paste the word using 'p'. However if I copy it to clipboard, Shift-Insert will paste the same thing.
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What is the difference between the HashMap and Map objects in Java?
What is the difference between the following maps I create (in another question, people answered using them seemingly interchangeably and I'm wondering if/how they are different):
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Does svn have a `revert-all` command?
If I want to throw away all of my changes, and return to the code that is on the repository, I do the following:
4 Answers
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