Enum Number 

pub enum Number {
    Integer(i64),
    Real(F64),
}

👎Deprecated since 0.6.0-alpha.3:

match on ExprKind::Integer / ExprKind::Real directly

Subset of ExprKind that covers number-type expression values.

Migration

Match on ExprKind directly — no intermediate Number needed:

let expr = expr!(42);

// Before:
// if let Some(n) = expr.try_as_number() {
//     match n { Number::Integer(i) => …, Number::Real(r) => … }
// }

// After:
match expr.kind() {
    ExprKind::Integer(i) => println!("integer: {i}"),
    ExprKind::Real(r)    => println!("real: {}", r.into_inner()),
    _ => {} // non-numeric expression
}

To construct a number expression use Expr::from or Expr::real — see Expr::number for the full mapping.

Variants

Integer(i64)

👎Deprecated since 0.6.0-alpha.3:

match on ExprKind::Integer / ExprKind::Real directly

Real(F64)

👎Deprecated since 0.6.0-alpha.3:

match on ExprKind::Integer / ExprKind::Real directly

Implementations

impl Number

pub fn real(r: f64) -> Self

👎Deprecated since 0.6.0-alpha.3:

use Expr::from(f64) or Expr::real(f64) instead

Construct a Number::Real from an f64.

Migration

// Before: Expr::number(Number::real(3.14))
let _real = Expr::from(3.14_f64);  // or Expr::real(3.14)

Panics

Panics if r is NaN.

Trait Implementations

impl Clone for Number

fn clone(&self) -> Number

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Number

impl Debug for Number

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

Formats the value using the given formatter.

impl Display for Number

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

Formats the value using the given formatter.

impl Eq for Number

impl From<Number> for ExprKind

fn from(number: Number) -> ExprKind

Converts to this type from the input type.

impl Hash for Number

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 Ord for Number

fn cmp(&self, other: &Number) -> 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 Number

fn eq(&self, other: &Number) -> 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 PartialOrd for Number

fn partial_cmp(&self, other: &Number) -> 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.

impl StructuralPartialEq for Number