Vim: delete empty lines within a visual selected area

Question

In ex-mode I can use :g/^$/d for the whole file. How to do it for a visual selected part of the file?

Answer 1

Select text visually, press : to enter command mode, and use the same command or use the '< and '> markers. E.g. :'<,'><your command here>.

For your particular use case, the final command would be:

:'<,'>g/^$/d