Enum `ReturnType`

enum ReturnType

Return type of a function signature.

Variants

Default

Return type is not specified.

Functions default to () and closures default to type inference.

Type($crate::token::RArrow, Box<Type>)

A particular type is returned.

Implementations

`impl ReturnType`

fn without_plus(input: ParseStream<'_>) -> Result<Self>

`impl Clone for ReturnType`

fn clone(self: &Self) -> Self

`impl Debug for ReturnType`

fn fmt(self: &Self, formatter: &mut Formatter<'_>) -> Result

`impl Eq for ReturnType`

`impl Freeze for ReturnType`

`impl Hash for ReturnType`

fn hash<H>(self: &Self, state: &mut H) where H: Hasher

`impl Parse for ReturnType`

fn parse(input: ParseStream<'_>) -> Result<Self>

`impl PartialEq for ReturnType`

fn eq(self: &Self, other: &Self) -> bool

`impl RefUnwindSafe for ReturnType`

`impl Send for ReturnType`

`impl Sync for ReturnType`

`impl ToTokens for ReturnType`

fn to_tokens(self: &Self, tokens: &mut TokenStream)

`impl Unpin for ReturnType`

`impl UnsafeUnpin for ReturnType`

`impl UnwindSafe for ReturnType`

`impl<T> Any for ReturnType`

fn type_id(self: &Self) -> TypeId

`impl<T> Borrow for ReturnType`

fn borrow(self: &Self) -> &T

`impl<T> BorrowMut for ReturnType`

fn borrow_mut(self: &mut Self) -> &mut T

`impl<T> CloneToUninit for ReturnType`

unsafe fn clone_to_uninit(self: &Self, dest: *mut u8)

`impl<T> From for ReturnType`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T> Spanned for ReturnType`

fn span(self: &Self) -> Span

`impl<T> ToOwned for ReturnType`

fn to_owned(self: &Self) -> T
fn clone_into(self: &Self, target: &mut T)

`impl<T, U> Into for ReturnType`

fn into(self: Self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for ReturnType`

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

`impl<T, U> TryInto for ReturnType`

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>