Function args_infer_vars

fn args_infer_vars<'a, 'tcx>(
    selcx: &SelectionContext<'a, 'tcx>,
    args: Binder<'tcx, GenericArgsRef<'tcx>>,
) -> impl Iterator<Item = TyOrConstInferVar> + Captures<'tcx>

Returns the set of inference variables contained in args.