R version
One of the relatively easy optimizations available is to use an up-to-date version of R. In general, R is very conservative, so upgrading doesn't break existing code. However, a new version will often provide free speed boosts for key functions.
The version command
returns a list that contains (among other things) the major and minor version of R currently being used.
This exercise is part of the course
Writing Efficient R Code
Exercise instructions
- Print the version details of R using
version. (It's not a function.) - Use dollar indexing (
$) to extract the major component ofversionand assign it to the variablemajor. - Likewise, extract the minor component and assign it to the variable
minor.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Print the R version details using version
___
# Assign the variable major to the major component
major <- ___
# Assign the variable minor to the minor component
minor <- ___