Struct RefFn

pub struct RefFn<'a, T, R> { /* private fields */ }

A simple function wrapper that behaves like a &dyn Fn(T) -> R type, but does not require a virtual table.

Implementations

impl<'a, T, R> RefFn<'a, T, R>

pub fn new<F, D>(data: &'a D) -> Self

where F: StaticRefFunction<'a, D, T, Output = R> + ?Sized,

Create a RefFn object by binding F::call function with data.

pub fn from_fn<F>(f: &'a F) -> Self

where F: Fn(T) -> R,

Create a RefFn object from a function reference.

pub fn call(&self, arg: T) -> R

Call the wrapped function.

Trait Implementations

impl<T, R> Clone for RefFn<'_, T, R>

fn clone(&self) -> Self

Returns a duplicate of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a, F, T, R> From<&'a F> for RefFn<'a, T, R>

where F: Fn(T) -> R,

fn from(value: &'a F) -> Self

Converts to this type from the input type.

impl<T, R> Copy for RefFn<'_, T, R>