pub struct Quality(_);
Expand description
Represents a quality used in quality values.
Can be created with the q
function.
Implementation notes
The quality value is defined as a number between 0 and 1 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, hyper uses an u16
value to store the
quality internally. For performance reasons you may set quality directly to a value between
0 and 1000 e.g. Quality(532)
matches the quality q=0.532
.
RFC7231 Section 5.3.1 gives more information on quality values in HTTP header fields.
Trait Implementations
sourceimpl Ord for Quality
impl Ord for Quality
1.21.0 · sourcefn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
Compares and returns the maximum of two values. Read more
1.21.0 · sourcefn min(self, other: Self) -> Selfwhere
Self: Sized,
fn min(self, other: Self) -> Selfwhere
Self: Sized,
Compares and returns the minimum of two values. Read more
1.50.0 · sourcefn clamp(self, min: Self, max: Self) -> Selfwhere
Self: Sized + PartialOrd<Self>,
fn clamp(self, min: Self, max: Self) -> Selfwhere
Self: Sized + PartialOrd<Self>,
Restrict a value to a certain interval. Read more
sourceimpl PartialOrd<Quality> for Quality
impl PartialOrd<Quality> for Quality
sourcefn partial_cmp(&self, other: &Quality) -> Option<Ordering>
fn partial_cmp(&self, other: &Quality) -> Option<Ordering>
1.0.0 · sourcefn le(&self, other: &Rhs) -> bool
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 moreimpl 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
sourceimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
sourcefn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.