Method map_data

datafusion/common/src/tree_node.rs:702–704

Applies a fallible `f` (returns `Result`) to the data of this [`Transformed`] object, without modifying the `transformed` flag.

(self, f: F)

    /// Applies a fallible `f` (returns `Result`) to the data of this
    /// [`Transformed`] object, without modifying the `transformed` flag.
    pub fn map_data<U, F: FnOnce(T) -> Result<U>>(self, f: F) -> Result<Transformed<U>> {
        f(self.data).map(|data| Transformed::new(data, self.transformed, self.tnr))
    }

    /// Applies a fallible transforming `f` to the data of this [`Transformed`]
    /// object.