Method construct

datafusion/physical-expr-common/src/sort_expr.rs:617–626

Constructs a new `LexRequirement` from the given sort requirements w/o enforcing non-degeneracy. This function is used internally and is not meant (or safe) for external use.

(
        reqs: impl IntoIterator<Item = PhysicalSortRequirement>,
    )

    /// enforcing non-degeneracy. This function is used internally and is not
    /// meant (or safe) for external use.
    fn construct(
        reqs: impl IntoIterator<Item = PhysicalSortRequirement>,
    ) -> (bool, Self) {
        let mut set = HashSet::new();
        let reqs = reqs
            .into_iter()
            .filter_map(|r| set.insert(Arc::clone(&r.expr)).then_some(r))
            .collect();
        (!set.is_empty(), Self { reqs })
    }
}

impl<const N: usize> From<[PhysicalSortRequirement; N]> for LexRequirement {