pub struct Quality(pub u16);
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 1000 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.
Tuple Fields
0: u16
Trait Implementations
sourceimpl Ord for Quality
impl Ord for Quality
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>
This method returns an ordering between self
and other
values if one exists. Read more
1.0.0 · sourcefn lt(&self, other: &Rhs) -> bool
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 · 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 more
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
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
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