pub struct FallbackConfig<S: Config, F: Config>(/* private fields */);
Expand description
Represents a copy-on-write config source that wraps two other sources, a read-write config and a read-only fallback config.
The config variables are connected to both sources, if the read-write config is not set the var will update with the fallback config, if it is set it will sync with the read-write config.
The FallbackConfig
type is an Arc
internally, so you can keep a cloned reference to it after moving it into
CONFIG
or another combinator config.
Implementations§
source§impl<S: Config, F: Config> FallbackConfig<S, F>
impl<S: Config, F: Config> FallbackConfig<S, F>
sourcepub fn new(config: S, fallback: F) -> Self
pub fn new(config: S, fallback: F) -> Self
New from the read-write config and read-only fallback.
Trait Implementations§
source§impl<S: Config, F: Config> AnyConfig for FallbackConfig<S, F>
impl<S: Config, F: Config> AnyConfig for FallbackConfig<S, F>
source§fn status(&self) -> BoxedVar<ConfigStatus>
fn status(&self) -> BoxedVar<ConfigStatus>
Gets a read-only variable that represents the IO status of the config.
source§fn get_raw(
&mut self,
key: ConfigKey,
default: RawConfigValue,
insert: bool,
shared: bool,
) -> BoxedVar<RawConfigValue>
fn get_raw( &mut self, key: ConfigKey, default: RawConfigValue, insert: bool, shared: bool, ) -> BoxedVar<RawConfigValue>
Gets a weak typed variable to the config
key
. Read moresource§fn contains_key(&mut self, key: ConfigKey) -> BoxedVar<bool>
fn contains_key(&mut self, key: ConfigKey) -> BoxedVar<bool>
Gets a read-only variable that tracks if an entry for the
key
is in the backing storage.source§fn remove(&mut self, key: &ConfigKey) -> bool
fn remove(&mut self, key: &ConfigKey) -> bool
Removes the
key
from the backing storage. Read moresource§fn low_memory(&mut self)
fn low_memory(&mut self)
Cleanup and flush RAM caches.
source§impl<S: Config, F: Config> FallbackConfigReset for FallbackConfig<S, F>
impl<S: Config, F: Config> FallbackConfigReset for FallbackConfig<S, F>
source§fn reset(&self, key: &ConfigKey)
fn reset(&self, key: &ConfigKey)
Removes the
key
from the config and updates all active config variables back to
the fallback value. Note that if you assign the config variable the key will be re-inserted on the config.source§fn can_reset(&self, key: ConfigKey) -> BoxedVar<bool>
fn can_reset(&self, key: ConfigKey) -> BoxedVar<bool>
Returns a read-only var that is
true
when the key
has an entry in the read-write config.source§fn clone_boxed(&self) -> Box<dyn FallbackConfigReset>
fn clone_boxed(&self) -> Box<dyn FallbackConfigReset>
Clone a reference to the config.
Auto Trait Implementations§
impl<S, F> Freeze for FallbackConfig<S, F>
impl<S, F> !RefUnwindSafe for FallbackConfig<S, F>
impl<S, F> Send for FallbackConfig<S, F>
impl<S, F> Sync for FallbackConfig<S, F>
impl<S, F> Unpin for FallbackConfig<S, F>
impl<S, F> !UnwindSafe for FallbackConfig<S, F>
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
source§impl<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§unsafe fn clone_to_uninit(&self, dst: *mut T)
unsafe fn clone_to_uninit(&self, dst: *mut T)
🔬This is a nightly-only experimental API. (
clone_to_uninit
)§impl<T> Instrument for T
impl<T> Instrument for T
§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
Converts
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more