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David M. Karr (83) [Avatar] Offline
In section 3.3.1. Overview of overridable operators, in the table of overriddable operators, it lists the unary minus and plus operators, and in the list of types that the operator "works with", along with the obvious "Number", it lists "ArrayList". What would unary minus or plus do with an ArrayList?
David M. Karr (83) [Avatar] Offline
Never mind. I figured this out. Unary plus doesn't really do anything, but unary minus will return a new ArrayList with all of the entries negated.