[−][src]Enum syn::ReturnType
Return type of a function signature.
This type is available if Syn is built with the "derive"
or "full"
feature.
Variants
Default
Return type is not specified.
Functions default to ()
and closures default to type inference.
Type(RArrow, Box<Type>)
A particular type is returned.
Methods
impl ReturnType
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pub fn without_plus(input: ParseStream) -> Result<Self>
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pub fn parse(input: ParseStream, allow_plus: bool) -> Result<Self>
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Trait Implementations
impl Parse for ReturnType
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fn parse(input: ParseStream) -> Result<Self>
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impl Clone for ReturnType
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fn clone(&self) -> ReturnType
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default fn clone_from(&mut self, source: &Self)
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Performs copy-assignment from source
. Read more
impl PartialEq<ReturnType> for ReturnType
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fn eq(&self, other: &ReturnType) -> bool
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fn ne(&self, other: &ReturnType) -> bool
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impl Eq for ReturnType
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impl Hash for ReturnType
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fn hash<__H: Hasher>(&self, state: &mut __H)
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default fn hash_slice<H>(data: &[Self], state: &mut H) where
H: Hasher,
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H: Hasher,
Feeds a slice of this type into the given [Hasher
]. Read more
impl Debug for ReturnType
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impl ToTokens for ReturnType
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fn to_tokens(&self, tokens: &mut TokenStream)
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default fn into_token_stream(self) -> TokenStream
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Convert self
directly into a TokenStream
object. Read more
Auto Trait Implementations
impl !Send for ReturnType
impl !Sync for ReturnType
Blanket Implementations
impl<T> Spanned for T where
T: ToTokens,
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T: ToTokens,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T> From for T
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impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T> Borrow for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,