Trait diesel::expression::array_comparison::MaybeEmpty

pub trait MaybeEmpty {
    // Required method
    fn is_empty(&self) -> bool;
}

Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.

Expand description

A helper trait to check if the values clause of an In or NotIn query dsl node is empty or not

Required Methods§

Returns true if self represents an empty collection Otherwise false is returned.