pub struct Constant(_);
Expand description
An opaque reference to a constant.
You can store ConstantData
in a
ConstantPool
for efficient storage and retrieval.
See ConstantPool::insert
.
While the order is stable, it is arbitrary and does not necessarily resemble the order in which the constants are written in the constant pool.
Implementations
Trait Implementations
sourceimpl Ord for Constant
impl Ord for Constant
sourceimpl PartialOrd<Constant> for Constant
impl PartialOrd<Constant> for Constant
sourcefn partial_cmp(&self, other: &Constant) -> Option<Ordering>
fn partial_cmp(&self, other: &Constant) -> 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
sourceimpl ReservedValue for Constant
impl ReservedValue for Constant
sourcefn reserved_value() -> Constant
fn reserved_value() -> Constant
Create an instance of the reserved value.
sourcefn is_reserved_value(&self) -> bool
fn is_reserved_value(&self) -> bool
Checks whether value is the reserved one.
impl Copy for Constant
impl Eq for Constant
impl StructuralEq for Constant
impl StructuralPartialEq for Constant
Auto Trait Implementations
impl RefUnwindSafe for Constant
impl Send for Constant
impl Sync for Constant
impl Unpin for Constant
impl UnwindSafe for Constant
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
sourceimpl<Q, K> Equivalent<K> for Q where
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Q where
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.
sourceimpl<T> SparseMapValue<T> for T where
T: EntityRef,
impl<T> SparseMapValue<T> for T where
T: EntityRef,
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcefn clone_into(&self, target: &mut T)
fn clone_into(&self, target: &mut T)
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more