Method try_map

datafusion/physical-plan/src/sort_pushdown.rs:77–90

Try to map the inner value, returning an error if the function fails.

(
        self,
        f: F,
    )

    /// Try to map the inner value, returning an error if the function fails.
    pub fn try_map<U, E, F: FnOnce(T) -> Result<U, E>>(
        self,
        f: F,
    ) -> Result<SortOrderPushdownResult<U>, E> {
        match self {
            Self::Exact { inner } => {
                Ok(SortOrderPushdownResult::Exact { inner: f(inner)? })
            }
            Self::Inexact { inner } => {
                Ok(SortOrderPushdownResult::Inexact { inner: f(inner)? })
            }
            Self::Unsupported => Ok(SortOrderPushdownResult::Unsupported),
        }
    }

    /// Convert this result to `Inexact`, downgrading `Exact` if present.
    ///