pub struct Fields { /* private fields */ }
Expand description
Mapping of names to Field
s.
Implementations§
Source§impl Fields
impl Fields
Sourcepub fn is_empty(&self) -> bool
pub fn is_empty(&self) -> bool
Return whether this field map contains no fields.
let mut fields = Fields::default();
assert!(fields.is_empty());
fields.insert("", Field::empty());
assert!(!fields.is_empty());
Sourcepub fn contains(&self, name: impl AsRef<str>) -> bool
pub fn contains(&self, name: impl AsRef<str>) -> bool
Return whether this field map contains a field with the given name.
let fields: Fields = [("a thing", Field::empty())].into_iter().collect();
assert!(fields.contains("a thing"));
assert!(!fields.contains("not a thing"));
Sourcepub fn get(&self, name: impl AsRef<str>) -> Option<&Field>
pub fn get(&self, name: impl AsRef<str>) -> Option<&Field>
Get a reference to the field with the provided name
, if it exists.
let fields: Fields = [("a thing", Field::empty())].into_iter().collect();
assert!(fields.get("a thing").is_some());
assert!(fields.get("not a thing").is_none());
Sourcepub fn get_mut(&mut self, name: impl AsRef<str>) -> Option<&mut Field>
pub fn get_mut(&mut self, name: impl AsRef<str>) -> Option<&mut Field>
Get a mutable reference to the field with the provided name
, if it exists.
let mut fields: Fields = [("a thing", Field::empty())].into_iter().collect();
assert!(fields.get_mut("a thing").is_some());
assert!(fields.get_mut("not a thing").is_none());
Sourcepub fn insert(&mut self, name: impl Into<String>, field: Field) -> Option<Field>
pub fn insert(&mut self, name: impl Into<String>, field: Field) -> Option<Field>
Insert a field with the given name into the map.
let mut fields = Fields::default();
assert!(fields.insert("field", Field::empty()).is_none());
assert!(fields.insert("field", Field::empty()).is_some());
Sourcepub fn remove(&mut self, name: impl AsRef<str>) -> Option<Field>
pub fn remove(&mut self, name: impl AsRef<str>) -> Option<Field>
Remove a field with the given name from the map.
let mut fields: Fields = [("a", Field::empty())].into_iter().collect();
assert_eq!(fields.remove("a"), Some(Field::empty()));
assert_eq!(fields.remove("a"), None);
Sourcepub fn field(&mut self, name: impl Into<String>) -> &mut Field
pub fn field(&mut self, name: impl Into<String>) -> &mut Field
Get a mutable reference to the field with the provided name
,
inserting an empty Field
if it didn’t exist.
let mut fields = Fields::default();
assert!(!fields.contains("thing"));
fields.field("thing");
assert!(fields.contains("thing"));
Trait Implementations§
Source§impl<'de> Deserialize<'de> for Fields
impl<'de> Deserialize<'de> for Fields
Source§fn deserialize<__D>(
__deserializer: __D,
) -> Result<Fields, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(
__deserializer: __D,
) -> Result<Fields, <__D as Deserializer<'de>>::Error>where
__D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
Source§impl<K> FromIterator<(K, Field)> for Fields
impl<K> FromIterator<(K, Field)> for Fields
Source§impl Serialize for Fields
impl Serialize for Fields
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
impl Eq for Fields
impl StructuralPartialEq for Fields
Auto Trait Implementations§
impl Freeze for Fields
impl RefUnwindSafe for Fields
impl Send for Fields
impl Sync for Fields
impl Unpin for Fields
impl UnwindSafe for Fields
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
derives, it is safe to assume that all images in self
exist.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§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
Source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Converts
Box<dyn Trait>
(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>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Converts
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
, which can then be further
downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
.Source§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Converts
&Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
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)
Converts
&mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s.Source§impl<T> Downcast for Twhere
T: Any,
impl<T> Downcast for Twhere
T: Any,
Source§fn into_any(self: Box<T>) -> Box<dyn Any>
fn into_any(self: Box<T>) -> Box<dyn Any>
Convert
Box<dyn Trait>
(where Trait: Downcast
) to Box<dyn Any>
. Box<dyn Any>
can
then be further downcast
into Box<ConcreteType>
where ConcreteType
implements Trait
.Source§fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
fn into_any_rc(self: Rc<T>) -> Rc<dyn Any>
Convert
Rc<Trait>
(where Trait: Downcast
) to Rc<Any>
. Rc<Any>
can then be
further downcast
into Rc<ConcreteType>
where ConcreteType
implements Trait
.Source§fn as_any(&self) -> &(dyn Any + 'static)
fn as_any(&self) -> &(dyn Any + 'static)
Convert
&Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
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)
Convert
&mut Trait
(where Trait: Downcast
) to &Any
. This is needed since Rust cannot
generate &mut Any
’s vtable from &mut Trait
’s.Source§impl<T> DowncastSend for T
impl<T> DowncastSend for T
Source§impl<T> DowncastSync for T
impl<T> DowncastSync for T
Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Compare self to
key
and return true
if they are equal.Source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
Source§impl<T> FromWorld for Twhere
T: Default,
impl<T> FromWorld for Twhere
T: Default,
Source§fn from_world(_world: &mut World) -> T
fn from_world(_world: &mut World) -> T
Creates Self
using default()
.
Source§impl<T, W> HasTypeWitness<W> for Twhere
W: MakeTypeWitness<Arg = T>,
T: ?Sized,
impl<T, W> HasTypeWitness<W> for Twhere
W: MakeTypeWitness<Arg = T>,
T: ?Sized,
Source§impl<T> Identity for Twhere
T: ?Sized,
impl<T> Identity for Twhere
T: ?Sized,
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
Source§fn in_current_span(self) -> Instrumented<Self> ⓘ
fn in_current_span(self) -> Instrumented<Self> ⓘ
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moreSource§impl<T> IntoResult<T> for T
impl<T> IntoResult<T> for T
Source§fn into_result(self) -> Result<T, RunSystemError>
fn into_result(self) -> Result<T, RunSystemError>
Converts this type into the system output type.
Source§impl<T> Serialize for T
impl<T> Serialize for T
fn erased_serialize(&self, serializer: &mut dyn Serializer) -> Result<(), Error>
fn do_erased_serialize( &self, serializer: &mut dyn Serializer, ) -> Result<(), ErrorImpl>
Source§impl<T> TypeData for T
impl<T> TypeData for T
Source§fn clone_type_data(&self) -> Box<dyn TypeData>
fn clone_type_data(&self) -> Box<dyn TypeData>
Creates a type-erased clone of this value.