I would like to invoke the builtin "uc" using a reference, however the following does not work (I suspect I'm not using the correct namespace for builtin functions): 
my(%hash) = (
  "sub" => \&uc,
);

print $hash{"sub"}->("hello");

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I do NOT want to redefine "uc", just "refer" to it. I've tried UNIVERSAL::uc, CORE::uc and CORE::GLOBAL::uc but they all complain with something like (depending on the namespace I try to use): 
Undefined subroutine &CORE::uc called at ./test.pl line 20.

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under 5.005_03
-Adi

In reply to How do I construct a reference to a builtin function? by adram

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