Struct `FnModifiers`

#[non_exhaustive]
pub struct FnModifiers { pub defaultness: Option<Default> }

Additional optional information about a function.

This data structure may grow to accommodate future Rust language changes, including the following in-progress RFCs:

RFC 3513 "Generators" (gen fn)
RFC 3678 "Trait method impl restrictions" (final fn)
#128044 "Contracts"

Fields

defaultness: Option<Default>: Unstable syntax: RFC 1210 "Impl specialization"

Implementations

`impl FnModifiers`

fn require_empty(&self) -> Result<()>

Trait Implementations

`impl Clone for FnModifiers`

fn clone(&self) -> Self

`impl Default for FnModifiers`

fn default() -> Self

Auto Trait Implementations

`impl !Send for FnModifiers`

`impl !Sync for FnModifiers`

`impl Freeze for FnModifiers`

`impl RefUnwindSafe for FnModifiers`

`impl Unpin for FnModifiers`

`impl UnsafeUnpin for FnModifiers`

`impl UnwindSafe for FnModifiers`

Blanket Implementations

`impl<T> Any for FnModifiers where T: 'static + ?Sized,`

fn type_id(&self) -> TypeId

`impl<T> Borrow<T> for FnModifiers where T: ?Sized,`

fn borrow(&self) -> &T

`impl<T> BorrowMut<T> for FnModifiers where T: ?Sized,`

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

`impl<T> CloneToUninit for FnModifiers where T: Clone,`

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

`impl<T> From<T> for FnModifiers`

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

`impl<T> ToOwned for FnModifiers where T: Clone,`

type Owned = T;
fn to_owned(&self) -> T
fn clone_into(&self, target: &mut T)

`impl<T, U> Into for FnModifiers where U: From<T>,`

fn into(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 FnModifiers where U: Into<T>,`

type Error = never;
fn try_from(value: U) -> Result<T, never>

`impl<T, U> TryInto for FnModifiers where U: TryFrom<T>,`

type Error = >::Error;
fn try_into(self) -> Result<U, >::Error>