CoroutineStart

Defines start options for coroutines builders.

It is used in the start parameter of coroutine builder functions like launch and async to describe when and how the coroutine should be dispatched initially.

This parameter only affects how the coroutine behaves until the code of its body starts executing. After that, cancellability and dispatching are defined by the behavior of the invoked suspending functions.

The summary of coroutine start options is:

• DEFAULT immediately schedules the coroutine for execution according to its context.

• LAZY delays the moment of the initial dispatch until the result of the coroutine is needed.

• ATOMIC prevents the coroutine from being cancelled before it starts, ensuring that its code will start executing in any case.

• UNDISPATCHED immediately executes the coroutine until its first suspension point in the current thread.