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Subset of rows containing NA (missing) values in a chosen column of a data frame
We have a data frame from a CSV file. The data frame DF has columns that contain observed values and a column ( VaR2 ) that contains the date at which a measurement has been taken. If the date was not recorded, the CSV file contains the value NA , for missing data.
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Why would introducing useless MOV instructions speed up a tight loop in x86_64 assembly?
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4 Answers
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AWS Error Message: A conflicting conditional operation is currently in progress against this resourc
I'm getting this error intermittently.
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Prevent text selection after double click
I'm handling the dblclick event on a span in my web app. A side-effect is that the double click selects text on the page. How can I prevent this selection from happening?
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What is the pythonic way to detect the last element in a 'for' loop?
I'd like to know the best way (more compact and "pythonic" way) to do a special treatment for the last element in a for loop. There is a piece of code that should be called only between elements, being suppressed in the last one.
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What does cherry-picking a commit with Git mean?
Recently, I have been asked to cherry-pick a commit.
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Most concise way to convert a Set to a List
For example, I am currently doing this:
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Convert pem key to ssh-rsa format
I have a certificate in der format, from it with this command I generate a public key:
8 Answers
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How to run Rails console in the test environment and load test_helper.rb?
The background: I'm having some problems with Thoughtbot's "Factory Girl" gem, with is used to create objects to use in unit and other tests. I'd like to go to the console and run different Factory Girl calls to check out what's happening. For example, I'd like to go in there are do...
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Add list to set?
Tested on Python 2.6 interpreter:
12 Answers
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