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How to find the installed pandas version
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pip list | findstr pandas - for Windows
– ZygD
Jul 31 at 11:28
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How to set the maximum memory usage for JVM?
...uments -Xms<memory> -Xmx<memory>. Use M or G after the numbers for indicating Megs and Gigs of bytes respectively. -Xms indicates the minimum and -Xmx the maximum.
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Select rows of a matrix that meet a condition
...swers (using subset or m$three) will work, otherwise they will not.
To perform the operation on a matrix, you can define a column by name:
m[m[, "three"] == 11,]
Or by number:
m[m[,3] == 11,]
Note that if only one row matches, the result is an integer vector, not a matrix.
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Command to change the default home directory of a user
...rname
usermod is the command to edit an existing user.
-d (abbreviation for --home) will change the user's home directory.
Change the user's home directory + Move the contents of the user's current directory:
usermod -m -d /newhome/username username
-m (abbreviation for --move-home) will mov...
How to write asynchronous functions for Node.js
... watch some videos by ryan dahl.
How do I write asynchronous functions for Node?
Just write normal functions, the only difference is that they are not executed immediately but passed around as callbacks.
How should I implement error event handling correctly
Generally API's give you a cal...
Clear Text Selection with JavaScript
....selection implies the existence of an empty() method of it. You've tested for the method in every other case, so you might as well test for empty in the final case too.
– Tim Down
Jul 5 '10 at 10:20
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Send POST Request with Data Specified in File via Curl
I need to make a POST request via Curl from the command line. Data for this request is located in a file. I know that via PUT this could be done with the --upload-file option.
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How does Task become an int?
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Task (no result beyond notification of completion/failure)
Task<T> (for a logical result of type T in an async manner)
The compiler does all the appropriate wrapping. The point is that you're asynchronously returning urlContents.Length - you can't make the method just return int, as the act...
VIM ctrlp.vim plugin: how to rescan files?
...n . It is a good alternative to the Command-T plugin which I have used before. What I did not like about Command-T is that it would take about 20-30 seconds to rescan files when it is invoked for the first time after starting vim.
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Javascript Array Concat not working. Why?
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Why, oh why, must I always forget this?
– Jeff Lowery
Nov 10 '19 at 0:20
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