operator_find_index

Emit the index of the first value that matches a predicate.

See Also

• FindOperator - Emit the first value that matches a predicate.
• ElementAtOperator - Emit the value at the given index then complete.
• FilterOperator - Keep values that satisfy a predicate.
• FirstOperator - Emit only the first value, then complete.

Example

cargo run -p rx_core --example operator_find_index_example

let _subscription = (1..=5)
    .into_observable()
    .find_index(|i| i % 2 == 0)
    .subscribe(PrintObserver::new("find_index_operator"));

Output:

find_index_operator - next: 1
find_index_operator - completed
find_index_operator - unsubscribed