Interface SubscribeObserver<T>

A callback function that gets called by the producer if and when it has no more values to provide (by calling next callback function). This means that no error has happened. This callback can't be called more than one time, it can't be called if the error callback function have been called previously, nor it can't be called if the consumer has unsubscribed.

For more info, please refer to guide/glossary-and-semantics#complete this guide.

A callback function that gets called by the producer if and when it encountered a problem of any kind. The errored value will be provided through the err parameter. This callback can't be called more than one time, it can't be called if the complete callback function have been called previously, nor it can't be called if the consumer has unsubscribed.

For more info, please refer to guide/glossary-and-semantics#error this guide.

A callback function that gets called by the producer during the subscription when the producer "has" the value. It won't be called if error or complete callback functions have been called, nor after the consumer has unsubscribed.

For more info, please refer to guide/glossary-and-semantics#next this guide.