Struct WriteStringFn

pub struct WriteStringFn<F, R>(/* private fields */)
where
    F: FnMut(String) -> R;

A wrapper for write functions for<R> FnMut(String) -> R.

It implements WriteStr trait and can be used in conjunction with IntoWriteFn and IntoTryWriteFn traits to simplify type inference.

Implementations

impl<F, R> WriteStringFn<F, R>

where F: FnMut(String) -> R,

pub fn new(closure: F) -> Self

Creates a new WriteStringFn containing the given closure or function.

Trait Implementations

impl<F, R: Clone> Clone for WriteStringFn<F, R>

where F: FnMut(String) -> R + Clone,

fn clone(&self) -> WriteStringFn<F, R>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<F, R: Debug> Debug for WriteStringFn<F, R>

where F: FnMut(String) -> R + Debug,

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

Formats the value using the given formatter.

impl<F, R: PartialEq> PartialEq for WriteStringFn<F, R>

where F: FnMut(String) -> R + PartialEq,

fn eq(&self, other: &WriteStringFn<F, R>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<F, R> WriteStr for WriteStringFn<F, R>

where F: FnMut(String) -> R,

type Output = R

The resulting type after writing.

fn write_str(&mut self, buf: &str) -> Self::Output

Performs byte writing.

impl<F, R: Copy> Copy for WriteStringFn<F, R>

where F: FnMut(String) -> R + Copy,

impl<F, R: Eq> Eq for WriteStringFn<F, R>

where F: FnMut(String) -> R + Eq,

impl<F, R> StructuralPartialEq for WriteStringFn<F, R>

where F: FnMut(String) -> R,