* **If you built a collection of simple data processing components, you can glue them together into complex arrangements of pipes, branches, merging, etc.**
### Helper Decorator
**• All coroutines must be "primed" by first calling .next()**
**• Remembering to call .next() is easy to forget.**
**• Solved by wrapping coroutines with a decorator:**
* **All coroutines must be "primed" by first calling .next()**
* **Remembering to call .next() is easy to forget.**
* **Solved by wrapping coroutines with a decorator:**