pub struct FromFn<F>(/* private fields */)
where
F: Fn(&mut Formatter<'_>) -> Result<(), Error>;๐ฌThis is a nightly-only experimental API. (
debug_closure_helpers)Expand description
Implements fmt::Debug and fmt::Display using a function.
Created with from_fn.
Trait Implementationsยง
Auto Trait Implementationsยง
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 Implementationsยง
Sourceยงimpl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
Sourceยงfn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
Sourceยงimpl<T> Instrument for T
impl<T> Instrument for T
Sourceยงfn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Sourceยงfn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Sourceยงimpl<T> PolicyExt for Twhere
T: ?Sized,
impl<T> PolicyExt for Twhere
T: ?Sized,
Sourceยงimpl<T> ToStringFallible for Twhere
T: Display,
impl<T> ToStringFallible for Twhere
T: Display,
Sourceยงfn try_to_string(&self) -> Result<String, TryReserveError>
fn try_to_string(&self) -> Result<String, TryReserveError>
ToString::to_string, but without panic on OOM.