Enum IsNull 

pub enum IsNull {
    Yes,
    No,
}

Tiny enum to make the return type of ToSql more descriptive

Variants

Yes

No data was written, as this type is null

No

The value is not null

This does not necessarily mean that any data was written to the buffer. For example, an empty string has no data to be sent over the wire, but also is not null.

Trait Implementations

impl Clone for IsNull

fn clone(&self) -> IsNull

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IsNull

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

Formats the value using the given formatter.

impl PartialEq for IsNull

fn eq(&self, other: &IsNull) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for IsNull

impl Eq for IsNull

impl StructuralPartialEq for IsNull