Struct toad_common::stem::Stem

pub struct Stem<T>(_);

A thread-safe mutable memory location that allows for many concurrent readers or a single writer.

When feature std enabled, this uses std::sync::RwLock. When std disabled, uses core::cell::Cell.

Implementations

impl<T> Stem<T>

pub const fn new(t: T) -> Self

Create a new Stem cell

pub fn map_ref<F, R>(&self, f: F) -> Rwhere F: for<'a> FnMut(&'a T) -> R,

Map a reference to T to a new type

This will block if called concurrently with map_mut.

There can be any number of concurrent map_ref sections running at a given time.

pub fn map_mut<F, R>(&self, f: F) -> Rwhere F: for<'a> FnMut(&'a mut T) -> R,

Map a mutable reference to T to a new type

This will block if called concurrently with map_ref or map_mut.

Trait Implementations

impl<T: Debug> Debug for Stem<T>

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

Formats the value using the given formatter.

impl<T: Default> Default for Stem<T>

fn default() -> Stem<T>

Returns the “default value” for a type.