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David Rubinger

Member for 8 years, 5 months
Last seen more than 2 years ago

GitHub
Toronto, ON, Canada

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About

Data scientist at Crescendo Technology. Formerly a data scientist at Polar and economist at the Department of Finance Canada.

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Jun 17, 2017

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105

R, dplyr - combination of group_by() and arrange() does not produce expected result?

63

How do I select columns that may or may not exist?

32

Sum of two Columns of Data Frame with NA Values

14

How to specify columns to exclude when retaining all distinct rows?

10

Is there a stringr equivalent for grep with value = TRUE?