Obviously the correct way would be always to pass Function A a reference to whatever Function B returned, but how can I create the reference to it when I don't know what it's going to be?
You don't have to know what it's returning to take a reference to it:funcA(\funcB());will pass a single reference (scalar) to whatever funcB returns.

Update
The note below is correct. Ignore this.

In reply to Re: Auto-detecting returned or passed variable type by VSarkiss
in thread Auto-detecting returned or passed variable type by richard5mith

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