[−][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
DefaultReturn 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[src]
impl ReturnTypepub fn without_plus(input: ParseStream) -> Result<Self>[src]
pub fn without_plus(input: ParseStream) -> Result<Self>pub fn parse(input: ParseStream, allow_plus: bool) -> Result<Self>[src]
pub fn parse(input: ParseStream, allow_plus: bool) -> Result<Self>Trait Implementations
impl Parse for ReturnType[src]
impl Parse for ReturnTypefn parse(input: ParseStream) -> Result<Self>[src]
fn parse(input: ParseStream) -> Result<Self>impl Clone for ReturnType[src]
impl Clone for ReturnTypefn clone(&self) -> ReturnType[src]
fn clone(&self) -> ReturnTypeReturns a copy of the value. Read more
fn clone_from(&mut self, source: &Self)1.0.0[src]
fn clone_from(&mut self, source: &Self)Performs copy-assignment from source. Read more
impl ToTokens for ReturnType[src]
impl ToTokens for ReturnTypefn to_tokens(&self, tokens: &mut TokenStream)[src]
fn to_tokens(&self, tokens: &mut TokenStream)Write self to the given TokenStream. Read more
fn into_token_stream(self) -> TokenStream[src]
fn into_token_stream(self) -> TokenStreamConvert self directly into a TokenStream object. Read more
Auto Trait Implementations
impl !Send for ReturnType
impl !Send for ReturnTypeimpl !Sync for ReturnType
impl !Sync for ReturnTypeBlanket Implementations
impl<T> Spanned for T where
T: ToTokens, [src]
impl<T> Spanned for T where
T: ToTokens, fn span(&Self) -> Span[src]
fn span(&Self) -> SpanReturns a Span covering the complete contents of this syntax tree node, or [Span::call_site()] if this node is empty. Read more
impl<T> From for T[src]
impl<T> From for Timpl<T, U> Into for T where
U: From<T>, [src]
impl<T, U> Into for T where
U: From<T>, impl<T> ToOwned for T where
T: Clone, [src]
impl<T> ToOwned for T where
T: Clone, type Owned = T
fn to_owned(&self) -> T[src]
fn to_owned(&self) -> TCreates owned data from borrowed data, usually by cloning. Read more
fn clone_into(&self, target: &mut T)[src]
fn clone_into(&self, target: &mut T)🔬 This is a nightly-only experimental API. (toowned_clone_into)
recently added
Uses borrowed data to replace owned data, usually by cloning. Read more
impl<T, U> TryFrom for T where
T: From<U>, [src]
impl<T, U> TryFrom for T where
T: From<U>, type Error = !
try_from)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>try_from)Performs the conversion.
impl<T> Borrow for T where
T: ?Sized, [src]
impl<T> Borrow for T where
T: ?Sized, impl<T> BorrowMut for T where
T: ?Sized, [src]
impl<T> BorrowMut for T where
T: ?Sized, fn borrow_mut(&mut self) -> &mut T[src]
fn borrow_mut(&mut self) -> &mut TMutably borrows from an owned value. Read more
impl<T, U> TryInto for T where
U: TryFrom<T>, [src]
impl<T, U> TryInto for T where
U: TryFrom<T>, type Error = <U as TryFrom<T>>::Error
try_from)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>try_from)Performs the conversion.
impl<T> Any for T where
T: 'static + ?Sized, [src]
impl<T> Any for T where
T: 'static + ?Sized, fn get_type_id(&self) -> TypeId[src]
fn get_type_id(&self) -> TypeId🔬 This is a nightly-only experimental API. (get_type_id)
this method will likely be replaced by an associated static
Gets the TypeId of self. Read more
impl<E> SpecializationError for E[src]
impl<E> SpecializationError for Efn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized, [src]
fn not_found<S, T>(trait_name: &'static str, method_name: &'static str) -> E where
T: ?Sized, 🔬 This is a nightly-only experimental API. (rustc_private)
this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via Cargo.toml instead?
Create an error for a missing method specialization. Defaults to panicking with type, trait & method names. S is the encoder/decoder state type, T is the type being encoded/decoded, and the arguments are the names of the trait and method that should've been overridden. Read more
impl<T> Erased for T[src]
impl<T> Erased for Timpl<T> Send for T where
T: ?Sized, [src]
impl<T> Send for T where
T: ?Sized, impl<T> Sync for T where
T: ?Sized, [src]
impl<T> Sync for T where
T: ?Sized, impl<T> Erased for T[src]
impl<T> Erased for T