use xxx (); #imports all of the symbols in @EXPORT
use xxx qw(OpenConnection $LoggedOn_user_id); # imports
 # all of the symbols in @EXPORT AND subroutine OpenConnection
 # AND the scalar $LoggedOn_user_id from @EXPORT_OK

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Sorry, but those two are incorrect. As per use, use Foo (); is exactly equivalent to BEGIN { require Foo }, so nothing is exported at all. When you say use Foo qw/bar/;, Exporter exports only that, regardless of what's in @EXPORT.

Update: Hm, my posting seems to have overlapped with an update to the node.

In reply to Re^4: global var by haukex
in thread global var by tultalk

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