A parameter-sweep specification. defaults apply to every member; params
is an explicit list of per-member overrides; grid (when present) is expanded
into the cartesian product of its named value lists and appended to params.
A spec must yield at least one member (a non-empty params or grid).
A parameter-sweep specification.
defaultsapply to every member;paramsis an explicit list of per-member overrides;grid(when present) is expanded into the cartesian product of its named value lists and appended toparams. A spec must yield at least one member (a non-emptyparamsorgrid).