Enum HandlerScanDirection 

pub enum HandlerScanDirection {
    First,
    Next,
}

The traversal direction of an indexless HANDLER … READ { FIRST | NEXT } scan (HandlerReadSelector::Scan) — the narrow handler_scan_function set. A surface tag (no meta), riding the parent’s span like KillTarget.

Variants

First

FIRST — the first row in storage order.

Next

NEXT — the next row after the handler’s current position.

Trait Implementations

impl Clone for HandlerScanDirection

fn clone(&self) -> HandlerScanDirection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HandlerScanDirection

impl Debug for HandlerScanDirection

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HandlerScanDirection

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for HandlerScanDirection

impl Hash for HandlerScanDirection

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for HandlerScanDirection

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for HandlerScanDirection

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for HandlerScanDirection