do / tap 签名: do(nextOrObserver: function, error: function, complete: function): Observable Transparently perform actions or side-effects, such as logging. 透明地执行操作或副作用,比如打印日志。 示...
Why Bindings Retries Delegates KVO Notifications Transient state Compositional disposal Aggregating network requests State Easy integration Benefits It’s not all or noth...
Catch and Release Catch and Release We also have the option of using the .catch operator. It allows us to catch errors on an existing stream, do something, and pass the except...