Struct uiuifree_actix_web_util::http::header::Quality

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pub struct Quality(_);

Expand description

Represents a quality used in q-factor values.

The default value is equivalent to q=1.0 (the max value).

Implementation notes

The quality value is defined as a number between 0.0 and 1.0 with three decimal places. This means there are 1001 possible values. Since floating point numbers are not exact and the smallest floating point data type (f32) consumes four bytes, we use an u16 value to store the quality internally.

RFC 7231 §5.3.1 gives more information on quality values in HTTP header fields.

Examples

use actix_http::header::{Quality, q};
assert_eq!(q(1.0), Quality::MAX);

assert_eq!(q(0.42).to_string(), "0.42");
assert_eq!(q(1.0).to_string(), "1");
assert_eq!(Quality::MIN.to_string(), "0.001");
assert_eq!(Quality::ZERO.to_string(), "0");

Implementations

impl Quality

pub const MAX: Quality = Quality(MAX_QUALITY_INT)

The maximum quality value, equivalent to q=1.0.

pub const MIN: Quality = Quality(1)

The minimum, non-zero quality value, equivalent to q=0.001.

pub const ZERO: Quality = Quality(0)

The zero quality value, equivalent to q=0.0.

Trait Implementations

impl Clone for Quality

fn clone(&self) -> Quality

Returns a copy of the value. Read more

1.0.0 · source

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

Performs copy-assignment from source. Read more

impl Debug for Quality

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

Formats the value using the given formatter. Read more

impl Default for Quality

The default value is Quality::MAX.

fn default() -> Quality

Returns the “default value” for a type. Read more

impl Display for Quality

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

Formats the value using the given formatter. Read more

impl Ord for Quality

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

This method returns an Ordering between self and other. Read more

1.21.0 · source

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

Compares and returns the maximum of two values. Read more

1.21.0 · source

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

Compares and returns the minimum of two values. Read more

1.50.0 · source

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

Restrict a value to a certain interval. Read more

impl PartialEq<Quality> for Quality

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

This method tests for self and other values to be equal, and is used by ==. Read more

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

This method tests for !=.

impl PartialOrd<Quality> for Quality

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

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

1.0.0 · source

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

This method tests less than (for self and other) and is used by the < operator. Read more

1.0.0 · source

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

This method tests less than or equal to (for self and other) and is used by the <= operator. Read more

1.0.0 · source

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

This method tests greater than (for self and other) and is used by the > operator. Read more

1.0.0 · source

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

This method tests greater than or equal to (for self and other) and is used by the >= operator. Read more

impl TryFrom<f32> for Quality

type Error = QualityOutOfBounds

The type returned in the event of a conversion error.

fn try_from(value: f32) -> Result<Quality, <Quality as TryFrom<f32>>::Error>

Performs the conversion.

impl Copy for Quality

impl Eq for Quality

impl StructuralEq for Quality

impl StructuralPartialEq for Quality

Auto Trait Implementations

impl RefUnwindSafe for Quality

impl Send for Quality

Struct uiuifree_actix_web_util::http::header::Quality

Implementations

impl Quality

pub const MAX: Quality = Quality(MAX_QUALITY_INT)

pub const MIN: Quality = Quality(1)

pub const ZERO: Quality = Quality(0)

Trait Implementations

impl Clone for Quality

fn clone(&self) -> Quality

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

impl Debug for Quality

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

impl Default for Quality

fn default() -> Quality

impl Display for Quality

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

impl Ord for Quality

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

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

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

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

impl PartialEq<Quality> for Quality

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

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

impl PartialOrd<Quality> for Quality

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

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

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

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

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

impl TryFrom<f32> for Quality

type Error = QualityOutOfBounds

fn try_from(value: f32) -> Result<Quality, <Quality as TryFrom<f32>>::Error>

impl Copy for Quality

impl Eq for Quality

impl StructuralEq for Quality

impl StructuralPartialEq for Quality

Auto Trait Implementations

impl RefUnwindSafe for Quality

impl Send for Quality

impl Sync for Quality

impl Unpin for Quality

impl UnwindSafe for Quality

Blanket Implementations

impl<T> Any for T where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

impl<T> Conv for T

fn conv<T>(self) -> T where Self: Into<T>,

impl<Choices> CoproductSubsetter<CNil, HNil> for Choices

type Remainder = Choices

fn subset( self) -> Result<CNil, <Choices as CoproductSubsetter<CNil, HNil>>::Remainder>

impl<T> DynClone for T where T: Clone,

fn __clone_box(&self, Private) -> *mut ()

impl<Q, K> Equivalent<K> for Q where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

fn equivalent(&self, key: &K) -> bool

impl<T> FmtForward for T

fn fmt_binary(self) -> FmtBinary<Self> where Self: Binary,

fn fmt_display(self) -> FmtDisplay<Self> where Self: Display,

fn fmt_lower_exp(self) -> FmtLowerExp<Self> where Self: LowerExp,

fn fmt_lower_hex(self) -> FmtLowerHex<Self> where Self: LowerHex,

fn fmt_octal(self) -> FmtOctal<Self> where Self: Octal,

fn fmt_pointer(self) -> FmtPointer<Self> where Self: Pointer,

fn fmt_upper_exp(self) -> FmtUpperExp<Self> where Self: UpperExp,

fn fmt_upper_hex(self) -> FmtUpperHex<Self> where Self: UpperHex,

impl<T> From<T> for T

fn from(t: T) -> T

impl<T> Instrument for T

fn instrument(self, span: Span) -> Instrumented<Self>

fn in_current_span(self) -> Instrumented<Self>

impl<T, U> Into<U> for T where U: From<T>,

fn into(self) -> U

impl<T, U, I> LiftInto<U, I> for T where U: LiftFrom<T, I>,

fn lift_into(self) -> U

impl<T> Pipe for T where T: ?Sized,

fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> R

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R where R: 'a,

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

impl<T> Any for T where
T: 'static + ?Sized,

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

fn conv<T>(self) -> T where
Self: Into<T>,

fn subset(
self
) -> Result<CNil, <Choices as CoproductSubsetter<CNil, HNil>>::Remainder>

impl<T> DynClone for T where
T: Clone,

impl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,

fn fmt_binary(self) -> FmtBinary<Self> where
Self: Binary,

fn fmt_display(self) -> FmtDisplay<Self> where
Self: Display,

fn fmt_lower_exp(self) -> FmtLowerExp<Self> where
Self: LowerExp,

fn fmt_lower_hex(self) -> FmtLowerHex<Self> where
Self: LowerHex,

fn fmt_octal(self) -> FmtOctal<Self> where
Self: Octal,

fn fmt_pointer(self) -> FmtPointer<Self> where
Self: Pointer,

fn fmt_upper_exp(self) -> FmtUpperExp<Self> where
Self: UpperExp,

fn fmt_upper_hex(self) -> FmtUpperHex<Self> where
Self: UpperHex,

impl<T, U> Into<U> for T where
U: From<T>,

impl<T, U, I> LiftInto<U, I> for T where
U: LiftFrom<T, I>,

impl<T> Pipe for T where
T: ?Sized,

fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R where
R: 'a,

fn pipe_ref_mut<'a, R>(&'a mut self, func: impl FnOnce(&'a mut Self) -> R) -> R where
R: 'a,

fn pipe_borrow<'a, B, R>(&'a self, func: impl FnOnce(&'a B) -> R) -> R where
Self: Borrow<B>,
B: 'a + ?Sized,
R: 'a,

fn pipe_borrow_mut<'a, B, R>(
&'a mut self,
func: impl FnOnce(&'a mut B) -> R
) -> R where
Self: BorrowMut<B>,
B: 'a + ?Sized,
R: 'a,

fn pipe_as_ref<'a, U, R>(&'a self, func: impl FnOnce(&'a U) -> R) -> R where
Self: AsRef<U>,
U: 'a + ?Sized,
R: 'a,

fn pipe_as_mut<'a, U, R>(&'a mut self, func: impl FnOnce(&'a mut U) -> R) -> R where
Self: AsMut<U>,
U: 'a + ?Sized,
R: 'a,

fn pipe_deref<'a, T, R>(&'a self, func: impl FnOnce(&'a T) -> R) -> R where
Self: Deref<Target = T>,
T: 'a + ?Sized,
R: 'a,

fn pipe_deref_mut<'a, T, R>(&'a mut self, func: impl FnOnce(&'a mut T) -> R) -> R where
Self: DerefMut<Target = T> + Deref,
T: 'a + ?Sized,
R: 'a,

fn tap_borrow<B>(self, func: impl FnOnce(&B)) -> Self where
Self: Borrow<B>,
B: ?Sized,

fn tap_borrow_mut<B>(self, func: impl FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,

fn tap_ref<R>(self, func: impl FnOnce(&R)) -> Self where
Self: AsRef<R>,
R: ?Sized,

fn tap_ref_mut<R>(self, func: impl FnOnce(&mut R)) -> Self where
Self: AsMut<R>,
R: ?Sized,

fn tap_deref<T>(self, func: impl FnOnce(&T)) -> Self where
Self: Deref<Target = T>,
T: ?Sized,

fn tap_deref_mut<T>(self, func: impl FnOnce(&mut T)) -> Self where
Self: DerefMut<Target = T> + Deref,
T: ?Sized,

fn tap_borrow_dbg<B>(self, func: impl FnOnce(&B)) -> Self where
Self: Borrow<B>,
B: ?Sized,

fn tap_borrow_mut_dbg<B>(self, func: impl FnOnce(&mut B)) -> Self where
Self: BorrowMut<B>,
B: ?Sized,

fn tap_ref_dbg<R>(self, func: impl FnOnce(&R)) -> Self where
Self: AsRef<R>,
R: ?Sized,

fn tap_ref_mut_dbg<R>(self, func: impl FnOnce(&mut R)) -> Self where
Self: AsMut<R>,
R: ?Sized,

fn tap_deref_dbg<T>(self, func: impl FnOnce(&T)) -> Self where
Self: Deref<Target = T>,
T: ?Sized,

fn tap_deref_mut_dbg<T>(self, func: impl FnOnce(&mut T)) -> Self where
Self: DerefMut<Target = T> + Deref,
T: ?Sized,

impl<T> ToOwned for T where
T: Clone,

impl<T> ToString for T where
T: Display + ?Sized,

fn try_conv<T>(self) -> Result<T, Self::Error> where
Self: TryInto<T>,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,

impl<V, T> VZip<V> for T where
V: MultiLane<T>,

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> where
S: Into<Dispatch>,