def select_empty
import bendtorch-core@0.1.0.0/src/tensor/axis_algebra.bend as AxisAlgebraimport Base
import bendtorch-core@0.1.0.0/src/tensor/axis_spec.bend as Axis
58def select_empty(+index: Maybe<&2, Nat>) -> {Axis.select(U32, Nil{}, index) == None{} : Maybe<&2, U32>}:
59 match index:
60 case None{}:
61 {==}
62 case Some{+value}:
63 lookup_empty(value)