Function datafusion::physical_expr::utils::build_dag

pub fn build_dag<T, F>(
    expr: Arc<dyn PhysicalExpr>,
    constructor: &F
) -> Result<(NodeIndex<u32>, StableGraph<T, usize, Directed, u32>), DataFusionError>where
    F: Fn(&ExprTreeNode<NodeIndex<u32>>) -> T,