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How do I drop a MongoDB database from the command line?
...--eval "db.dropDatabase()"
More info on scripting the shell from the command line here: https://docs.mongodb.com/manual/tutorial/write-scripts-for-the-mongo-shell/#scripting
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Getting individual colors from a color map in matplotlib
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You can do this with the code below, and the code in your question was actually very close to what you needed, all you have to do is call the cmap object you have.
import matplotlib
cmap = matplotlib.cm.get_cmap('Spectral')
rgba = cmap(0.5)
print(rgba) # (0.9...
How to replace list item in best way
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Use Lambda to find the index in the List and use this index to replace the list item.
List<string> listOfStrings = new List<string> {"abc", "123", "ghi"};
listOfStrings[listOfStrings.FindIndex(ind=>ind.Equals("123"))] = "def";
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Git Checkout warning: unable to unlink files, permission denied
... usually see that kind of error when there is a process not releasing the handle of those files.
Make sure nothing is running, and then try your checkout again.
Note: it can also be related with the way Git has been installed (on Windows, UAC can generate problem if msysgit is installed in C:\Prog...
java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
...e database than cursors on the DB. One case is where you have a connection and thread pool larger than the number of cursors on the database.
You have many developers or applications connected to the same DB instance (which will probably include many schemas) and together you are using too many conn...
How do you pass arguments to define_method?
...guments. When you define a method you're really just nicknaming the block and keeping a reference to it in the class. The parameters come with the block. So:
define_method(:say_hi) { |other| puts "Hi, " + other }
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Git Ignores and Maven targets
... man page. The pattern */target/* should ignore any directory named target and anything under it. Or you may try */target/** to ignore everything under target.
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PHP Function Comments
...net/license/3_01.txt. If you did not receive a copy of
* the PHP License and are unable to obtain it through the web, please
* send a note to license@php.net so we can mail you a copy immediately.
*
* @category CategoryName
* @package PackageName
* @author Original Author <author@...
Can we pass parameters to a view in SQL?
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What are the practical differences between this and a view? Can you assign user permissions to only access this function?
– MikeMurko
Oct 22 '12 at 17:44
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What is a segmentation fault?
What is a segmentation fault? Is it different in C and C++? How are segmentation faults and dangling pointers related?
14 A...