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kotlinlang

By "computational operations", the docs states "any blocking operation that can take some time to complete", for example disc/network IO, scientific computation, data filtering, etc. In order to write suspend functions that are cancellable, you have to :
- call other suspend functions that support cancellation (it is often indicated in their documentation)
- check that the coroutine is still active, and either throw `CancellationException` (`ensureActive()`) or make the block complete early (just like with `Thread` cancellation).

You can start a coroutine atomically or with `NonCancellable` context to make it not cancel by cancellation in the middle of the coroutine. I think.