Enum Is 

pub enum Is<'a> {
    Null,
    NotNull,
    True,
    NotTrue,
    False,
    NotFalse,
    Unknown,
    NotUnknown,
    DistinctFrom(Expression<'a>),
    NotDistinctFrom(Expression<'a>),
}

Type of is expression

Variants

Null

NotNull

True

NotTrue

False

NotFalse

Unknown

NotUnknown

DistinctFrom(Expression<'a>)

NotDistinctFrom(Expression<'a>)

Trait Implementations

impl<'a> Clone for Is<'a>

fn clone(&self) -> Is<'a>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Debug for Is<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.