Build a default Expr for a port whose incoming edge is absent and which has no per-node inline value. Honors the port's kind-wide default if given; otherwise produces a zero value of the port's declared type.
Expr
default
Build a default
Exprfor a port whose incoming edge is absent and which has no per-node inline value. Honors the port's kind-widedefaultif given; otherwise produces a zero value of the port's declared type.