On the other hand, the pit bull in me has my teeth into tying variables
Tied variables are pretty slow, and they don't always work due to bugs. That's why I suggested the alternative.
Closest I've been able to come so far is this wrapper
The variable you called $tied isn't tied. That's why it works. If you fix the variable name, you get:
sub call {
my $sub = shift;
return $sub->(@_);
}
You basically took the solution I already posted and put it in a function.
I got rid of the misleading/broken/wrong prototype. Don't use prototypes unless you have a good reason and you understand the problems associated with using them.
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