[c++1z] N4295: fold-expressions.
This is a new form of expression of the form: (expr op ... op expr) where one of the exprs is a parameter pack. It expands into (expr1 op (expr2onwards op ... op expr)) (and likewise if the pack is on the right). The non-pack operand can be omitted; in that case, an empty pack gives a fallback value or an error, depending on the operator. llvm-svn: 221573
Loading
Please sign in to comment