# retry

Projects each element of an observable sequence into a new form by incorporating the element's index. This is an alias for the `select` method.

## Arguments

1. `[retryCount]` _(`Number`)_:  Number of times to retry the sequence. If not provided, retry the sequence indefinitely.

## Returns

_(`Observable`)_: An observable sequence producing the elements of the given sequence repeatedly until it terminates successfully.

## Example
