I ran into ss64.com which provides good help regarding how to write batch scripts that the Windows Command Interpreter will run. ...

I have a dataframe and I would like to count the number of rows within each group. I reguarly use the aggregate function to sum data as follows: ...

I am running R on Windows, not as an administrator. When I install a package, the following command doesn't work: 15 Answer...

Is there a programmatic way to detect whether or not you are on a big-endian or little-endian architecture? I need to be able to write code that will execute on an Intel or PPC system and use exactly the same code (i.e. no conditional compilation). ...

Recently I've bumped into a realization/implementation of the Singleton design pattern for C++. It has looked like this (I have adopted it from the real life example): ...

I know that == has some issues when comparing two Strings . It seems that String.equals() is a better approach. Well, I'm doing JUnit testing and my inclination is to use assertEquals(str1, str2) . Is this a reliable way to assert two Strings contain the same content? I would use assertTr...

In a script where I create many figures with fix, ax = plt.subplots(...) , I get the warning RuntimeWarning: More than 20 figures have been opened. Figures created through the pyplot interface (matplotlib.pyplot.figure) are retained until explicitly closed and may consume too much memory. ...

Is there a way to do repetitive background tasks in Go? I'm thinking of something like Timer.schedule(task, delay, period) in Java. I know I can do this with a goroutine and Time.sleep() , but I'd like something that easily stopped. ...

I was playing around in python. I used the following code in IDLE: 6 Answers 6 ...

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