pub trait ReadUntracked: Sized + DefinedAt {
type Value: Deref;
// Required method
fn try_read_untracked(&self) -> Option<Self::Value>;
// Provided methods
fn read_untracked(&self) -> Self::Value { ... }
fn custom_try_read(&self) -> Option<Option<Self::Value>> { ... }
}Expand description
Give read-only access to a signal’s value by reference through a guard type, without tracking the value reactively.
Required Associated Types§
Required Methods§
Sourcefn try_read_untracked(&self) -> Option<Self::Value>
fn try_read_untracked(&self) -> Option<Self::Value>
Returns the guard, or None if the signal has already been disposed.
Provided Methods§
Sourcefn read_untracked(&self) -> Self::Value
fn read_untracked(&self) -> Self::Value
Sourcefn custom_try_read(&self) -> Option<Option<Self::Value>>
fn custom_try_read(&self) -> Option<Option<Self::Value>>
This is a backdoor to allow overriding the Read::try_read implementation despite it being auto implemented.
If your type contains a Signal,
call it’s ReadUntracked::custom_try_read here, else return None.
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.