operator_enumerate

Attach a running index to each emission.

See Also

• MapOperator - Transform each value with a mapping function.
• MapIntoOperator - Map each value using Into.
• MapErrorOperator - Transform error values into another error value.
• MapNeverOperator - Re-type Never signals into concrete types.
• MaterializeOperator - Turn next/error/complete into notification values.
• DematerializeOperator - Convert notifications back into real signals.
• PairwiseOperator - Emit the previous and current values together.

Example

cargo run -p rx_core --example operator_enumerate_example

let _subscription = (10..=15)
    .into_observable()
    .enumerate()
    .subscribe(PrintObserver::new("enumerate_operator"));

Output:

enumerate_operator - next: (10, 0)
enumerate_operator - next: (11, 1)
enumerate_operator - next: (12, 2)
enumerate_operator - next: (13, 3)
enumerate_operator - next: (14, 4)
enumerate_operator - next: (15, 5)
enumerate_operator - completed
enumerate_operator - unsubscribed