Struct Placeholder 

pub struct Placeholder {
    pub name: Option<&'static str>,
    pub style: PlaceholderStyle,
}

A SQL parameter placeholder.

Fields

name: Option<&'static str>

The name of the parameter.

style: PlaceholderStyle

The style of the placeholder.

Implementations

impl Placeholder

pub const fn with_style(name: &'static str, style: PlaceholderStyle) -> Self

Creates a new placeholder with the given name and style.

pub const fn colon(name: &'static str) -> Self

Creates a new colon-style placeholder.

pub const fn at(name: &'static str) -> Self

Creates a new at-sign-style placeholder.

pub const fn dollar(name: &'static str) -> Self

Creates a new dollar-style placeholder.

pub const fn positional() -> Self

Creates a positional placeholder (‘?’).

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 Display for Placeholder

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

Formats the value using the given formatter.

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 Copy for Placeholder

impl Eq for Placeholder

impl StructuralPartialEq for Placeholder