6 releases

Uses new Rust 2024

new 0.2.1 Feb 1, 2026
0.2.0 Jan 24, 2026
0.1.2 Jan 24, 2026
0.0.1 Jan 19, 2026

#46 in #rx-core-operator


Used in 2 crates (via rx_core)

MIT license

165KB
4.5K SLoC

operator_reduce

crates.io ci codecov license

Fold values and emit only the final accumulator on completion.

See Also

  • ScanOperator - Accumulate state and emit every intermediate result.

Example

cargo run -p rx_core --example operator_reduce_example
let _subscription = (0..=10)
    .into_observable()
    .reduce(|acc, next| acc + next, 0)
    .subscribe(PrintObserver::new("reduce_operator"));

Output:

reduce_operator - next: 55
reduce_operator - completed
reduce_operator - unsubscribed

Dependencies

~275–750KB
~18K SLoC