subroutines may be located anywhere in the main program

[Dan Jacobson]

Perlsub says subroutines may be located anywhere in the main program;
and indeed,
$ perl -e 'if(0){sub x{print "wow"}};x;'
wow

Anything non ideal here?

 

[Tassilo v. Parseval]

Also sprach Dan Jacobson:

Perlsub says subroutines may be located anywhere in the main program;
and indeed,
$ perl -e 'if(0){sub x{print "wow"}};x;'
wow

Anything non ideal here?

Readability perhaps. At least I'd be confused to see a subroutine
declared in an if-branch.

Other than that, there is not much wrong with it as long as you don't
expect to impose a certain scope or visibility on your subroutines.
They'll always be globally accessible (within the same package) and Perl
doesn't know about inner functions or so.

Tassilo