From the standpoint of calling a subroutine by reference, there are no semantic or effective distinctions between whether it's a reference to a named subroutine or an anonymous subroutine.
You can either prepend the sub ref with the ampersand, or use the dereferencing arrow and brackets. For example
sub brag {
print "I am so great, I even have a name.\n";
}
my $not_famous = sub { print "I'm behind the scenes and forgotten.\n";
+ };
my $famous = \&brag;
# dereferencing with the & symbol
&$not_famous;
&$brag;
# dereferencing with the arrow
$not_famous->();
$brag->();
Assuming you can get a CODE ref out of your data structure, call it the way you prefer.
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