While working on the development of an R package it is often necessary to install the latest version of the package. This can be achieved by first building a source distribution of the package (on the command line)
R CMD build my_package
and then installing it in R. Any running R sessions with previous version of the package loaded will need to reload it.
A more convenient approach uses the
devtools package to simplify the process. In an R session with the working directory set to the package directory
will build, install and reload the package.