Struct FromFn

pub struct FromFn<F>(/* private fields */)
where
    F: Fn(&mut Formatter<'_>) -> Result<(), Error>;

🔬This is a nightly-only experimental API. (debug_closure_helpers #117729)

Implements fmt::Debug and fmt::Display using a function.

Created with from_fn.

Trait Implementations

impl<F> Debug for FromFn<F>

where F: Fn(&mut Formatter<'_>) -> Result<(), Error>,

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

Formats the value using the given formatter.

impl<F> Display for FromFn<F>

where F: Fn(&mut Formatter<'_>) -> Result<(), Error>,

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

Formats the value using the given formatter.