Struct ConfigVar 

pub struct ConfigVar<T>(pub ReadVar<T>);

A wrapper around ReadVar<T> that implements PartialEq via backing-variable identity (VarEqBacking).

Use this in config structs where a ReadVar field needs equality comparison for config merging. Since ReadVar deliberately does not implement PartialEq (its values aren’t known at flow-resolution time), ConfigVar provides identity-based comparison instead.

Example

flowey_config! {
    pub struct Config {
        pub verbose: Option<ConfigVar<bool>>,
    }
}

Tuple Fields

0: ReadVar<T>

Trait Implementations

impl<T> ClaimVar for ConfigVar<T>

where T: Serialize + DeserializeOwned + PartialEq + Eq + Clone,

type Claimed = ReadVar<T, VarClaimed>

The claimed version of Self.

fn claim(self, ctx: &mut StepCtx<'_>) -> ReadVar<T, VarClaimed>

Claim the Var for this step, allowing it to be accessed at runtime.

impl<T> Clone for ConfigVar<T>

where T: Serialize + DeserializeOwned,

fn clone(&self) -> ConfigVar<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for ConfigVar<T>

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

Formats the value using the given formatter.

impl<'de, T> Deserialize<'de> for ConfigVar<T>

where T: DeserializeOwned,

fn deserialize<__D>( __deserializer: __D, ) -> Result<ConfigVar<T>, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<T> From<ReadVar<T>> for ConfigVar<T>

where T: Serialize + DeserializeOwned + PartialEq + Eq + Clone,

fn from(v: ReadVar<T>) -> ConfigVar<T>

Converts to this type from the input type.

impl<T> PartialEq for ConfigVar<T>

where T: Serialize + DeserializeOwned + PartialEq + Eq + Clone,

fn eq(&self, other: &ConfigVar<T>) -> 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<T> Serialize for ConfigVar<T>

where T: Serialize,

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.