in reply to How to write out a Perl script and run it in as few keystrokes as possible.

You can execute a shell command in vim using:

:!command

Vim substitutes % in the command for the currently edited file, thus the following can be used to run the current script (assuming it's chmodded correctly and has a shebang):

:!./%

Via .vimrc you can create a shortcut for that.

... or to create a shortcut which saves first, then runs:

command R w | !./%

And another (hey, TIMTOWTDI):

nmap <F5> :w<cr>:!./%<cr>

(which maps the F5 key to do the duty.)

perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'