Trait WriteValue
pub trait WriteValue: Sized + DefinedAt {
type Value: 'static;
// Required method
fn try_write_value(&self) -> Option<UntrackedWriteGuard<Self::Value>>;
// Provided method
fn write_value(&self) -> UntrackedWriteGuard<Self::Value> { ... }
}
Expand description
A variation of the Write
trait that provides a signposted “always-non-reactive” API.
E.g. for StoredValue
.
Required Associated Types§
type Value: 'static
type Value: 'static
The type of the value’s value.
Required Methods§
fn try_write_value(&self) -> Option<UntrackedWriteGuard<Self::Value>>
fn try_write_value(&self) -> Option<UntrackedWriteGuard<Self::Value>>
Returns a non-reactive write guard, or None
if the value has already been disposed.
Provided Methods§
fn write_value(&self) -> UntrackedWriteGuard<Self::Value>
fn write_value(&self) -> UntrackedWriteGuard<Self::Value>
Returns a non-reactive write guard.
§Panics
Panics if you try to access a value that has been disposed.
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.