Struct QValue 

pub struct QValue(/* private fields */);

A quality value: 0 to 1 in thousandths (RFC 9110 section 12.4.2). No floating point.

Examples

use parse_net::QValue;

assert_eq!(QValue::parse(b"0.5")?.thousandths(), 500);
assert_eq!(QValue::parse(b"1.000")?, QValue::ONE);
assert!(QValue::parse(b"1.5").is_err() && QValue::parse(b".5").is_err());

Implementations

impl QValue

pub const ONE: Self

q=1, the weight of a member without q.

pub const ZERO: Self

q=0: not acceptable.

pub const fn from_thousandths(t: u16) -> Option<Self>

The weight t thousandths, if t is at most 1000.

pub const fn thousandths(self) -> u16

The weight in thousandths, 0 to 1000.

pub fn parse(s: &[u8]) -> Result<Self, ParseError>

Parses ( "0" [ "." 0*3DIGIT ] ) / ( "1" [ "." 0*3("0") ] ).

Errors

ErrorKind::InvalidQValue for anything else (1.5, 0.1234, .5, -1, 1.001, an empty value).

Trait Implementations

impl Clone for QValue

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for QValue

impl Debug for QValue

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

Formats the value using the given formatter.

impl Eq for QValue

impl Hash for QValue

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 QValue

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.

fn clamp_to<R>(self, range: R) -> Self

where Self: Sized, R: ClampBounds<Self>,

🔬This is a nightly-only experimental API. (clamp_to)

Restrict a value to a certain range.

impl PartialEq for QValue

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for QValue

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.

impl StructuralPartialEq for QValue