INNER CODE UNIT · Rust

set

gosub-io/gosub-engine · crates/gosub_config/src/lib.rs:115

    pub fn set(&self, key: &str, value: Setting) -> Result<()> {
        // Mutate under the lock, collect the callbacks to fire, then release the lock *before*
        // invoking them so callbacks can freely re-enter the store.
        let fire = {
            let store = self.0.write();
            store.set(key, value)?.map(|value| {
                let callbacks = store.matching_callbacks(key);
                (value, callbacks)
            })
        };
        if let Some((value, callbacks)) = fire {
            for callback in callbacks {
                callback(key, &value);
            }
        }
        Ok(())
    }

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