Function retry
Retry executing a given delegate at most X times and wait between the retries. As soon as the delegate is executed successfully, the function immediately returns.
Nullable!(ReturnType!dg) retry(alias dg, T)
(
T waiter,
long max_retries,
Duration duration,
string error_msg = "Operation timed out: "
);
Parameters
| Name | Description |
|---|---|
| dg | the delegate we want to execute X times |
| waiter | object implementing the wait() primitive |
| max_retries | maximum number of times the delegate is executed |
| duration | the time between retrying to execute the delegate |
| error_msg | optional error message |
Returns
returns Nullable() in case the delegate cannot be executed after X retries or when the delegate returns false, otherwise it returns the original return value of the delegate wrapped into a Nullable object