Enum Constant

pub enum Constant {
    E,
    Pi,
    Infinity,
    NegativeInfinity,
    Nan,
}

A mathematical constant.

Variants

E

The base of the natural logarithm

Pi

The ratio of a circle’s circumference to its diameter

Infinity

infinity

NegativeInfinity

-infinity

Nan

Not a number.

Implementations

impl Constant

pub fn as_str(&self) -> &str

Returns a string representation of the value.

Trait Implementations

impl Clone for Constant

fn clone(&self) -> Constant

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Constant

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Constant

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Into<f32> for Constant

fn into(self) -> f32

Converts this type into the (usually inferred) input type.

impl<'any> IntoOwned<'any> for Constant

type Owned = Constant

A variant of Self with a new lifetime.

fn into_owned(self) -> Self

Make lifetime of self 'static.

impl JsonSchema for Constant

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(gen: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl<'i> Parse<'i> for Constant

fn parse<'t>( input: &mut Parser<'i, 't>, ) -> Result<Self, ParseError<'i, ParserError<'i>>>

Parse a value of this type using an existing parser.

fn parse_string(input: &'i str) -> Result<Self, ParseError<'i, ParserError<'i>>>

Parse a value from a string.

impl PartialEq for Constant

fn eq(&self, other: &Constant) -> 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 Serialize for Constant

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl ToCss for Constant

fn to_css<W>( &self, dest: &mut Printer<'_, '_, '_, W>, ) -> Result<(), PrinterError>

where W: Write,

Serialize self in CSS syntax, writing to dest.

fn to_css_string( &self, options: PrinterOptions<'_>, ) -> Result<String, PrinterError>

Serialize self in CSS syntax and return a string.

impl<'i, __T: Visit<'i, __T, __V>, __V: ?Sized + Visitor<'i, __T>> Visit<'i, __T, __V> for Constant

const CHILD_TYPES: VisitTypes

Available on crate feature visitor only.

The types of values contained within this value and its children. This is used to skip branches that don’t have any values requested by the Visitor.

fn visit_children(&mut self, visitor: &mut __V) -> Result<(), __V::Error>

Available on crate feature visitor only.

Visit the children of this value.

fn visit(&mut self, visitor: &mut V) -> Result<(), V::Error>

Available on crate feature visitor only.

Visits the value by calling an appropriate method on the Visitor. If no corresponding visitor method exists, then the children are visited.

impl Copy for Constant

impl StructuralPartialEq for Constant