Is it possible to tell whether a variable passed to a function is actually a reference. In other words, I would like something like a "is_reference()" function. Perhaps there is a way to "flag" the variable (in its declaration, say), to help facilitate this?
(I'm not hopeful...)
Also (in a similar vein..) is there a way to recognize whether a passed variable is in fact a GLOBAL?
Can a reference or a GLOBAL be recognized as such?
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