Struct PackedOption
pub struct PackedOption<T>(/* private fields */)
where
T: ReservedValue;
Expand description
Packed representation of Option<T>
.
Implementations§
§impl<T> PackedOption<T>where
T: ReservedValue,
impl<T> PackedOption<T>where
T: ReservedValue,
Trait Implementations§
§impl<T> Clone for PackedOption<T>where
T: Clone + ReservedValue,
impl<T> Clone for PackedOption<T>where
T: Clone + ReservedValue,
§fn clone(&self) -> PackedOption<T>
fn clone(&self) -> PackedOption<T>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read more§impl<T> Debug for PackedOption<T>where
T: ReservedValue + Debug,
impl<T> Debug for PackedOption<T>where
T: ReservedValue + Debug,
§impl<T> Default for PackedOption<T>where
T: ReservedValue,
impl<T> Default for PackedOption<T>where
T: ReservedValue,
§fn default() -> PackedOption<T>
fn default() -> PackedOption<T>
Create a default packed option representing None
.
§impl<'de, T> Deserialize<'de> for PackedOption<T>where
T: ReservedValue + Deserialize<'de>,
impl<'de, T> Deserialize<'de> for PackedOption<T>where
T: ReservedValue + Deserialize<'de>,
§fn deserialize<__D>(
__deserializer: __D,
) -> Result<PackedOption<T>, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D,
) -> Result<PackedOption<T>, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
§impl<T> From<Option<T>> for PackedOption<T>where
T: ReservedValue,
impl<T> From<Option<T>> for PackedOption<T>where
T: ReservedValue,
§fn from(opt: Option<T>) -> PackedOption<T>
fn from(opt: Option<T>) -> PackedOption<T>
Convert an option into its packed equivalent.
§impl<T> From<T> for PackedOption<T>where
T: ReservedValue,
impl<T> From<T> for PackedOption<T>where
T: ReservedValue,
§fn from(t: T) -> PackedOption<T>
fn from(t: T) -> PackedOption<T>
Convert t
into a packed Some(x)
.
§impl<T> Hash for PackedOption<T>where
T: Hash + ReservedValue,
impl<T> Hash for PackedOption<T>where
T: Hash + ReservedValue,
§impl<T> Into<Option<T>> for PackedOption<T>where
T: ReservedValue,
impl<T> Into<Option<T>> for PackedOption<T>where
T: ReservedValue,
§impl<T> Ord for PackedOption<T>where
T: Ord + ReservedValue,
impl<T> Ord for PackedOption<T>where
T: Ord + ReservedValue,
§impl<T> PartialEq for PackedOption<T>where
T: PartialEq + ReservedValue,
impl<T> PartialEq for PackedOption<T>where
T: PartialEq + ReservedValue,
§impl<T> PartialOrd for PackedOption<T>where
T: PartialOrd + ReservedValue,
impl<T> PartialOrd for PackedOption<T>where
T: PartialOrd + ReservedValue,
§impl<T> Serialize for PackedOption<T>where
T: ReservedValue + Serialize,
impl<T> Serialize for PackedOption<T>where
T: ReservedValue + Serialize,
§fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
fn serialize<__S>(
&self,
__serializer: __S,
) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where
__S: Serializer,
Serialize this value into the given Serde serializer. Read more
impl<T> Copy for PackedOption<T>where
T: Copy + ReservedValue,
impl<T> Eq for PackedOption<T>where
T: Eq + ReservedValue,
impl<T> StructuralPartialEq for PackedOption<T>where
T: ReservedValue,
Auto Trait Implementations§
impl<T> Freeze for PackedOption<T>where
T: Freeze,
impl<T> RefUnwindSafe for PackedOption<T>where
T: RefUnwindSafe,
impl<T> Send for PackedOption<T>where
T: Send,
impl<T> Sync for PackedOption<T>where
T: Sync,
impl<T> Unpin for PackedOption<T>where
T: Unpin,
impl<T> UnwindSafe for PackedOption<T>where
T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.