perldoc -f use tells you the following:
Imports some semantics into the current package from the named
module, generally by aliasing certain subroutine or variable
names into your package. It is exactly equivalent to
BEGIN { require Module; import Module LIST; }
except that Module *must* be a bareword.
So, you can easily do it like the following:
my $module = "CGI";
$module->require;
$module->import;
Update: Fixed the ugly bug I introduced. Thanks to tomhukins for spotting it.
Update 2: I should test before I promise broken things as fixed. See my reply to edan further down
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