Trait diesel::expression::array_comparison::MaybeEmpty

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

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

Required Methods

fn is_empty(&self) -> bool

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

Implementors

impl<ST, I> MaybeEmpty for Many<ST, I>