Skip to main content

Reducer

lc_langgraph::state

Trait Reducer 

Source 
pub trait Reducer<S: StateSchema>: Send + Sync {
    // Required method
    fn reduce(&self, current: &S, update: &S) -> S;
}
Expand description

Reducer trait for merging state updates

Reducers define how state updates are merged into the current state. This enables patterns like add_messages which appends rather than replaces.

Required Methods§

Source

fn reduce(&self, current: &S, update: &S) -> S

Reduce current state with an update

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§