How would you resolve the following compilation error?

# server

[muliyul]

How would you resolve the following compilation error?

[muliyul]

I came up with:

var future: ScheduledFuture<*> by Delegates.notNull()
future = heartbeatExecutor.scheduleAtFixedRate({

but wondering if there are more elegant solutions...

[Paul Griffith]

just throw cancellationexception inside the future?

[Daniel Pitts]

@muliyul, Your solution in theory has a race condition. The lambda may end up being called before the scheduleAtFixedRate returns, which would cause future to not actually be assigned yet.

@Paul Griffith’s suggestion would work, according to the JavaDoc for scheduleAtFixedRate.

If any execution of the task encounters an exception, subsequent executions are suppressed

[muliyul]

I don't see a mention of CancellationException in javadoc.

[Daniel Pitts]

Any exception will do.