Method for_each

flow-rs/src/registry.rs:66–72

(&self, f: F)

    }

    pub(crate) fn for_each<F>(&self, f: F)
    where
        F: FnMut(&T),
    {
        let registry = self.inner.read().unwrap();
        registry.elems.values().map(|x| x.as_ref()).for_each(f);
    }

    pub(crate) fn to_vec(&self) -> Vec<Arc<T>> {
        let mut registry = self.inner.write().unwrap();