pub struct FromFn<F>(F)
where
F: Fn(&mut Formatter<'_>) -> Result<(), Error>;
🔬This is a nightly-only experimental API. (
debug_closure_helpers
)Expand description
Implements fmt::Debug
and fmt::Display
using a function.
Created with from_fn
.
Tuple Fields§
§0: F
🔬This is a nightly-only experimental API. (
debug_closure_helpers
)Trait Implementations§
Auto Trait Implementations§
impl<F> Freeze for FromFn<F>where
F: Freeze,
impl<F> RefUnwindSafe for FromFn<F>where
F: RefUnwindSafe,
impl<F> Send for FromFn<F>where
F: Send,
impl<F> Sync for FromFn<F>where
F: Sync,
impl<F> Unpin for FromFn<F>where
F: Unpin,
impl<F> UnwindSafe for FromFn<F>where
F: UnwindSafe,
Blanket Implementations§
§impl<T> ArchivePointee for T
impl<T> ArchivePointee for T
§type ArchivedMetadata = ()
type ArchivedMetadata = ()
The archived version of the pointer metadata for this type.
§fn pointer_metadata(
_: &<T as ArchivePointee>::ArchivedMetadata,
) -> <T as Pointee>::Metadata
fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata
Converts some archived metadata to the pointer metadata for itself.
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
§impl<T> LayoutRaw for T
impl<T> LayoutRaw for T
§fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>
Returns the layout of the type.
§impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2where
T: SharedNiching<N1, N2>,
N1: Niching<T>,
N2: Niching<T>,
impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2where
T: SharedNiching<N1, N2>,
N1: Niching<T>,
N2: Niching<T>,
§impl<T> Pointee for T
impl<T> Pointee for T
Source§impl<T> Upcastable for T
impl<T> Upcastable for T
Source§fn upcast_any_ref(&self) -> &(dyn Any + 'static)
fn upcast_any_ref(&self) -> &(dyn Any + 'static)
upcast ref
Source§fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
fn upcast_any_mut(&mut self) -> &mut (dyn Any + 'static)
upcast mut ref