[−][src]Enum diesel::serialize::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 Copy for IsNull[src]

impl Eq for IsNull[src]

impl Clone for IsNull[src][+]

fn clone_from(&mut self, source: &Self)1.0.0[src][−]

Performs copy-assignment from source. Read more

impl PartialEq<IsNull> for IsNull[src][+]

#[must_use] fn ne(&self, other: &Rhs) -> bool1.0.0[src][−]

This method tests for !=.

impl Debug for IsNull[src][+]

Auto Trait Implementations

impl Unpin for IsNull

impl Sync for IsNull

impl Send for IsNull

impl UnwindSafe for IsNull

impl RefUnwindSafe for IsNull

Blanket Implementations

impl<T> IntoSql for T[src][+]

fn into_sql<T>(self) -> AsExprOf<Self, T> where
    Self: AsExpression<T> + Sized, [src][−]

Convert self to an expression for Diesel's query builder. Read more

fn as_sql<'a, T>(&'a self) -> AsExprOf<&'a Self, T> where
    &'a Self: AsExpression<T>, [src][−]

Convert &self to an expression for Diesel's query builder. Read more

impl<T> ToOwned for T where
    T: Clone, [src][+]

type Owned = T

The resulting type after obtaining ownership.

impl<T> From<T> for T[src][+]

impl<T, U> Into<U> for T where
    U: From<T>, [src][+]

impl<T, U> TryFrom<U> for T where
    U: Into<T>, [src][+]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, [src][+]

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

impl<T> Borrow<T> for T where
    T: ?Sized, [src][+]

impl<T> BorrowMut<T> for T where
    T: ?Sized, [src][+]

impl<T> Any for T where
    T: 'static + ?Sized, [src][+]