Struct Variable 

pub struct Variable { /* private fields */ }

a variable in a query

Implementations

impl Variable

pub const fn new_const(id: u32) -> Self

pub fn range(low: Self, high: Self) -> impl Iterator<Item = Self>

impl Variable

pub fn placeholder() -> Variable

Trait Implementations

impl Clone for Variable

fn clone(&self) -> Variable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Variable

impl Debug for Variable

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

Formats the value using the given formatter.

impl Eq for Variable

impl From<Variable> for QueryEntry

fn from(var: Variable) -> Self

Converts to this type from the input type.

impl Hash for Variable

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 NumericId for Variable

fn index(self) -> usize

return the inner representation of id as usize

fn rep(self) -> u32

return the inner representation of id.

type Rep = u32

type Atomic = Atomic<u32>

fn new(id: u32) -> Self

fn from_usize(index: usize) -> Self

fn inc(self) -> Self

impl Ord for Variable

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Variable

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for Variable

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.