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subs - Perl pragma to predeclare sub names
use subs qw(frob);
frob 3..10;
This will predeclare all the subroutine whose names are
in the list, allowing you to use them without parentheses
even before they're declared.
Unlike pragmas that affect the $^H hints variable, the use vars and
use subs declarations are not BLOCK-scoped. They are thus effective
for the entire file in which they appear. You may not rescind such
declarations with no vars or no subs.
See perlmodlib/Pragmatic Modules and strict/strict subs.
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