subs - Perl pragma to predeclare subroutine names
use subs qw(frob);
frob 3..10;
This will predeclare all the subroutines whose names are in the list, allowing
you to use them without parentheses (as list operators) even before they're
declared.
Unlike pragmas that affect the $^H hints
variable, the "use vars" and
"use subs" declarations are not lexically
scoped to the block they appear in: they affect the entire package in which
they appear. It is not possible to rescind these declarations with
"no vars" or "no
subs".
See "Pragmatic Modules" in perlmodlib and "strict
subs" in strict.