Struct Placeholder 

pub struct Placeholder;

Placeholder marker used for bind parameters before concrete typing.

Trait Implementations

impl Clone for Placeholder

fn clone(&self) -> Placeholder

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Placeholder

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

Formats the value using the given formatter.

impl Default for Placeholder

fn default() -> Placeholder

Returns the “default value” for a type.

impl Hash for Placeholder

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 Placeholder

fn eq(&self, other: &Placeholder) -> 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 Compatible<Any> for Placeholder

impl Compatible<Any> for Placeholder

impl Compatible<BitString> for Placeholder

impl Compatible<Blob> for Placeholder

impl Compatible<Boolean> for Placeholder

impl Compatible<Bytea> for Placeholder

impl Compatible<Char> for Placeholder

impl Compatible<Cidr> for Placeholder

impl Compatible<Circle> for Placeholder

impl Compatible<Date> for Placeholder

impl Compatible<Enum> for Placeholder

impl Compatible<Float4> for Placeholder

impl Compatible<Float8> for Placeholder

impl Compatible<Inet> for Placeholder

impl Compatible<Int2> for Placeholder

impl Compatible<Int4> for Placeholder

impl Compatible<Int8> for Placeholder

impl Compatible<Integer> for Placeholder

impl Compatible<Interval> for Placeholder

impl Compatible<Json> for Placeholder

impl Compatible<Jsonb> for Placeholder

impl Compatible<Line> for Placeholder

impl Compatible<LineSegment> for Placeholder

impl Compatible<LineString> for Placeholder

impl Compatible<MacAddr> for Placeholder

impl Compatible<MacAddr8> for Placeholder

impl Compatible<Numeric> for Placeholder

impl Compatible<Numeric> for Placeholder

impl Compatible<Placeholder> for Any

impl Compatible<Placeholder> for Any

impl Compatible<Placeholder> for BitString

impl Compatible<Placeholder> for Blob

impl Compatible<Placeholder> for Boolean

impl Compatible<Placeholder> for Bytea

impl Compatible<Placeholder> for Char

impl Compatible<Placeholder> for Cidr

impl Compatible<Placeholder> for Circle

impl Compatible<Placeholder> for Date

impl Compatible<Placeholder> for Enum

impl Compatible<Placeholder> for Float4

impl Compatible<Placeholder> for Float8

impl Compatible<Placeholder> for Inet

impl Compatible<Placeholder> for Int2

impl Compatible<Placeholder> for Int4

impl Compatible<Placeholder> for Int8

impl Compatible<Placeholder> for Integer

impl Compatible<Placeholder> for Interval

impl Compatible<Placeholder> for Json

impl Compatible<Placeholder> for Jsonb

impl Compatible<Placeholder> for Line

impl Compatible<Placeholder> for LineSegment

impl Compatible<Placeholder> for LineString

impl Compatible<Placeholder> for MacAddr

impl Compatible<Placeholder> for MacAddr8

impl Compatible<Placeholder> for Numeric

impl Compatible<Placeholder> for Numeric

impl Compatible<Placeholder> for Point

impl Compatible<Placeholder> for Polygon

impl Compatible<Placeholder> for Real

impl Compatible<Placeholder> for Rect

impl Compatible<Placeholder> for Text

impl Compatible<Placeholder> for Text

impl Compatible<Placeholder> for Time

impl Compatible<Placeholder> for Timestamp

impl Compatible<Placeholder> for Timestamptz

impl Compatible<Placeholder> for Timetz

impl Compatible<Placeholder> for Uuid

impl Compatible<Placeholder> for Varchar

impl Compatible<Point> for Placeholder

impl Compatible<Polygon> for Placeholder

impl Compatible<Real> for Placeholder

impl Compatible<Rect> for Placeholder

impl Compatible<Text> for Placeholder

impl Compatible<Text> for Placeholder

impl Compatible<Time> for Placeholder

impl Compatible<Timestamp> for Placeholder

impl Compatible<Timestamptz> for Placeholder

impl Compatible<Timetz> for Placeholder

impl Compatible<Uuid> for Placeholder

impl Compatible<Varchar> for Placeholder

impl Compatible for Placeholder

impl Copy for Placeholder

impl DataType for Placeholder

impl Eq for Placeholder

impl StructuralPartialEq for Placeholder

impl Textual for Placeholder