This is on Windows.
I just upgrade from
Ruby 1.9.3 to
Ruby 2.1.0 using RailsInstaller( and with other component like git, devkit, etc..). I doing this by uninstall the previous version, and then install a newer one.
The problem is that after uninstall , there is a
Ruby1.9.3 left, with gem previouslly installed.
Now, since I upgrade to
Ruby2.1.0, can I re-use this fold's gems? If so, How? Or I just delete that folder and re-install every gem again?