pub struct NonNilUuid(/* private fields */);
Expand description
A UUID that is guaranteed not to be the nil UUID.
This is useful for representing optional UUIDs more efficiently, as Option<NonNilUuid>
takes up the same space as Uuid
.
Note that Uuid
s created by the following methods are guaranteed to be non-nil:
- [
Uuid::new_v1
] - [
Uuid::now_v1
] - [
Uuid::new_v3
] Uuid::new_v4
- [
Uuid::new_v5
] - [
Uuid::new_v6
] - [
Uuid::now_v6
] - [
Uuid::new_v7
] - [
Uuid::now_v7
] - [
Uuid::new_v8
]
§ABI
The NonNilUuid
type does not yet have a stable ABI. Its representation or alignment
may change. It is currently only guaranteed that NonNilUuid
and Option<NonNilUuid>
are the same size as Uuid
.
Implementations§
Source§impl NonNilUuid
impl NonNilUuid
Sourcepub const fn new(uuid: Uuid) -> Option<NonNilUuid>
pub const fn new(uuid: Uuid) -> Option<NonNilUuid>
Creates a non-nil UUID if the value is non-nil.
Sourcepub const unsafe fn new_unchecked(uuid: Uuid) -> NonNilUuid
pub const unsafe fn new_unchecked(uuid: Uuid) -> NonNilUuid
Creates a non-nil without checking whether the value is non-nil. This results in undefined behavior if the value is nil.
§Safety
The value must not be nil.
Trait Implementations§
Source§impl Clone for NonNilUuid
impl Clone for NonNilUuid
Source§fn clone(&self) -> NonNilUuid
fn clone(&self) -> NonNilUuid
Returns a duplicate 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 moreSource§impl Debug for NonNilUuid
impl Debug for NonNilUuid
Source§impl<'de> Deserialize<'de> for NonNilUuid
impl<'de> Deserialize<'de> for NonNilUuid
Source§fn deserialize<D>(
deserializer: D,
) -> Result<NonNilUuid, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
fn deserialize<D>(
deserializer: D,
) -> Result<NonNilUuid, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
Source§impl Display for NonNilUuid
impl Display for NonNilUuid
Source§impl From<NonNilUuid> for Uuid
impl From<NonNilUuid> for Uuid
Source§fn from(non_nil: NonNilUuid) -> Uuid
fn from(non_nil: NonNilUuid) -> Uuid
Converts a NonNilUuid
back into a Uuid
.
§Examples
let uuid = Uuid::from_u128(0x0123456789abcdef0123456789abcdef);
let non_nil = NonNilUuid::try_from(uuid).unwrap();
let uuid_again = Uuid::from(non_nil);
assert_eq!(uuid, uuid_again);
Source§impl FromReflect for NonNilUuid
impl FromReflect for NonNilUuid
Source§fn from_reflect(reflect: &(dyn PartialReflect + 'static)) -> Option<NonNilUuid>
fn from_reflect(reflect: &(dyn PartialReflect + 'static)) -> Option<NonNilUuid>
Constructs a concrete instance of
Self
from a reflected value.Source§fn take_from_reflect(
reflect: Box<dyn PartialReflect>,
) -> Result<Self, Box<dyn PartialReflect>>
fn take_from_reflect( reflect: Box<dyn PartialReflect>, ) -> Result<Self, Box<dyn PartialReflect>>
Attempts to downcast the given value to
Self
using,
constructing the value using from_reflect
if that fails. Read moreSource§impl GetTypeRegistration for NonNilUuid
impl GetTypeRegistration for NonNilUuid
Source§fn get_type_registration() -> TypeRegistration
fn get_type_registration() -> TypeRegistration
Returns the default
TypeRegistration
for this type.Source§fn register_type_dependencies(_registry: &mut TypeRegistry)
fn register_type_dependencies(_registry: &mut TypeRegistry)
Registers other types needed by this type. Read more
Source§impl Hash for NonNilUuid
impl Hash for NonNilUuid
Source§impl PartialEq<NonNilUuid> for Uuid
impl PartialEq<NonNilUuid> for Uuid
Source§impl PartialEq<Uuid> for NonNilUuid
impl PartialEq<Uuid> for NonNilUuid
Source§impl PartialEq for NonNilUuid
impl PartialEq for NonNilUuid
Source§impl PartialReflect for NonNilUuid
impl PartialReflect for NonNilUuid
Source§fn get_represented_type_info(&self) -> Option<&'static TypeInfo>
fn get_represented_type_info(&self) -> Option<&'static TypeInfo>
Source§fn to_dynamic(&self) -> Box<dyn PartialReflect>
fn to_dynamic(&self) -> Box<dyn PartialReflect>
Source§fn try_apply(
&mut self,
value: &(dyn PartialReflect + 'static),
) -> Result<(), ApplyError>
fn try_apply( &mut self, value: &(dyn PartialReflect + 'static), ) -> Result<(), ApplyError>
Source§fn reflect_kind(&self) -> ReflectKind
fn reflect_kind(&self) -> ReflectKind
Returns a zero-sized enumeration of “kinds” of type. Read more
Source§fn reflect_ref(&self) -> ReflectRef<'_>
fn reflect_ref(&self) -> ReflectRef<'_>
Returns an immutable enumeration of “kinds” of type. Read more
Source§fn reflect_mut(&mut self) -> ReflectMut<'_>
fn reflect_mut(&mut self) -> ReflectMut<'_>
Returns a mutable enumeration of “kinds” of type. Read more
Source§fn reflect_owned(self: Box<NonNilUuid>) -> ReflectOwned
fn reflect_owned(self: Box<NonNilUuid>) -> ReflectOwned
Returns an owned enumeration of “kinds” of type. Read more
Source§fn try_into_reflect(
self: Box<NonNilUuid>,
) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>
fn try_into_reflect( self: Box<NonNilUuid>, ) -> Result<Box<dyn Reflect>, Box<dyn PartialReflect>>
Attempts to cast this type to a boxed, fully-reflected value.
Source§fn try_as_reflect(&self) -> Option<&(dyn Reflect + 'static)>
fn try_as_reflect(&self) -> Option<&(dyn Reflect + 'static)>
Attempts to cast this type to a fully-reflected value.
Source§fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>
fn try_as_reflect_mut(&mut self) -> Option<&mut (dyn Reflect + 'static)>
Attempts to cast this type to a mutable, fully-reflected value.
Source§fn into_partial_reflect(self: Box<NonNilUuid>) -> Box<dyn PartialReflect>
fn into_partial_reflect(self: Box<NonNilUuid>) -> Box<dyn PartialReflect>
Casts this type to a boxed, reflected value. Read more
Source§fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)
fn as_partial_reflect(&self) -> &(dyn PartialReflect + 'static)
Casts this type to a reflected value. Read more
Source§fn as_partial_reflect_mut(&mut self) -> &mut (dyn PartialReflect + 'static)
fn as_partial_reflect_mut(&mut self) -> &mut (dyn PartialReflect + 'static)
Casts this type to a mutable, reflected value. Read more
Source§fn reflect_hash(&self) -> Option<u64>
fn reflect_hash(&self) -> Option<u64>
Returns a hash of the value (which includes the type). Read more
Source§fn reflect_partial_eq(
&self,
value: &(dyn PartialReflect + 'static),
) -> Option<bool>
fn reflect_partial_eq( &self, value: &(dyn PartialReflect + 'static), ) -> Option<bool>
Returns a “partial equality” comparison result. Read more
Source§fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>
fn debug(&self, f: &mut Formatter<'_>) -> Result<(), Error>
Debug formatter for the value. Read more
Source§fn reflect_clone(&self) -> Result<Box<dyn Reflect>, ReflectCloneError>
fn reflect_clone(&self) -> Result<Box<dyn Reflect>, ReflectCloneError>
Attempts to clone
Self
using reflection. Read moreSource§fn apply(&mut self, value: &(dyn PartialReflect + 'static))
fn apply(&mut self, value: &(dyn PartialReflect + 'static))
Applies a reflected value to this value. Read more
Source§fn reflect_clone_and_take<T>(&self) -> Result<T, ReflectCloneError>
fn reflect_clone_and_take<T>(&self) -> Result<T, ReflectCloneError>
For a type implementing
PartialReflect
, combines reflect_clone
and
take
in a useful fashion, automatically constructing an appropriate
ReflectCloneError
if the downcast fails. Read moreSource§fn is_dynamic(&self) -> bool
fn is_dynamic(&self) -> bool
Indicates whether or not this type is a dynamic type. Read more
Source§impl Reflect for NonNilUuid
impl Reflect for NonNilUuid
Source§fn into_any(self: Box<NonNilUuid>) -> Box<dyn Any>
fn into_any(self: Box<NonNilUuid>) -> Box<dyn Any>
Returns the value as a
Box<dyn Any>
. Read moreSource§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
Returns the value as a
&mut dyn Any
. Read moreSource§fn into_reflect(self: Box<NonNilUuid>) -> Box<dyn Reflect>
fn into_reflect(self: Box<NonNilUuid>) -> Box<dyn Reflect>
Casts this type to a boxed, fully-reflected value.
Source§fn as_reflect(&self) -> &(dyn Reflect + 'static)
fn as_reflect(&self) -> &(dyn Reflect + 'static)
Casts this type to a fully-reflected value.
Source§fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)
fn as_reflect_mut(&mut self) -> &mut (dyn Reflect + 'static)
Casts this type to a mutable, fully-reflected value.
Source§impl Serialize for NonNilUuid
impl Serialize for NonNilUuid
Source§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
Source§impl TryFrom<Uuid> for NonNilUuid
impl TryFrom<Uuid> for NonNilUuid
Source§fn try_from(
uuid: Uuid,
) -> Result<NonNilUuid, <NonNilUuid as TryFrom<Uuid>>::Error>
fn try_from( uuid: Uuid, ) -> Result<NonNilUuid, <NonNilUuid as TryFrom<Uuid>>::Error>
Attempts to convert a Uuid
into a NonNilUuid
.
§Examples
let uuid = Uuid::from_u128(0x0123456789abcdef0123456789abcdef);
let non_nil = NonNilUuid::try_from(uuid).unwrap();
Source§impl TypePath for NonNilUuid
impl TypePath for NonNilUuid
Source§fn type_path() -> &'static str
fn type_path() -> &'static str
Returns the fully qualified path of the underlying type. Read more
Source§fn short_type_path() -> &'static str
fn short_type_path() -> &'static str
Returns a short, pretty-print enabled path to the type. Read more
Source§fn type_ident() -> Option<&'static str>
fn type_ident() -> Option<&'static str>
Source§fn crate_name() -> Option<&'static str>
fn crate_name() -> Option<&'static str>
Source§impl Typed for NonNilUuid
impl Typed for NonNilUuid
impl Copy for NonNilUuid
impl Eq for NonNilUuid
impl StructuralPartialEq for NonNilUuid
Auto Trait Implementations§
impl Freeze for NonNilUuid
impl RefUnwindSafe for NonNilUuid
impl Send for NonNilUuid
impl Sync for NonNilUuid
impl Unpin for NonNilUuid
impl UnwindSafe for NonNilUuid
Blanket Implementations§
Source§impl<T, U> AsBindGroupShaderType<U> for T
impl<T, U> AsBindGroupShaderType<U> for T
Source§fn as_bind_group_shader_type(&self, _images: &RenderAssets<GpuImage>) -> U
fn as_bind_group_shader_type(&self, _images: &RenderAssets<GpuImage>) -> U
Return the
T
ShaderType
for self
. When used in AsBindGroup
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exist.Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
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fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
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T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
Source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
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fn into_any(self: Box<T>) -> Box<dyn Any>
Converts
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(where Trait: Downcast
) to Box<dyn Any>
, which can then be
downcast
into Box<dyn ConcreteType>
where ConcreteType
implements Trait
.Source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
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downcast
into Rc<ConcreteType>
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.Source§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Converts
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generate &Any
’s vtable from &Trait
’s.Source§fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)
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Convert
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