The Clean Way to Use Rx

Prefacio

1. About the book
2. About the source code
3. Content development
4. Glossary
5. Audience
6. Questions and contact
7. Versions of IDEs and technologies used.
8. Changelog

Foundation

1. Item 1: From Imperative to Reactive
2. Item 2: Focus on pure functions
3. Item 3: Check the nature of the streams when they are linked
4. Item 4: Decide when to use an Observable type empty or never

Be Clean

1. Item 5: Keep clean the operators’ chain
2. Ítem 6: Define functional operator chains
3. Item 7: Do not nest subscriptions, use operator chain
4. Ítem 8: Use Rx when there are events involved
5. Item 9: Do not orchestrate Rx operations with imperative programming
6. Item 10: Do not include Rx code in Do operators
7. Item 11: Propagate wrappers, not units
8. Item 12: Avoid propagating null values, turn to Optionals
9. Item 13: Remember you can use a filter, instead of if sentence
10. Item 14: It is possible to divide the emission when if-else is presented
11. Item 15: Sharing code is not the same as sharing emissions
12. Item 16: Not everything is delegated to the Observer
13. Item 17: Delay as much as possible the definition of the Schedule

Flow dependencies

1. Item 18: Check completion or error events when using filters
2. Item 19: Beware of reduction operators on infinite streams
3. Item 20: Maintain consistency like the stream
4. Item 21: Be careful when you depend on onComplete
5. Item 22: An additional step in the operator chain
6. Item 23: Orchestrating and combining effectively

Operators

1. Item 24: Properly select operators
2. Item 25: Use the map operator only for transformations

Timing

1. Item 26: Make sure you execute the tasks at the right time
2. Item 27: Control execution times on dependent tasks

Error handling

1. Item 28: Handling errors

Multicasting

1. Item 29: Share Observables, share Observers, or both

Multi-threading

1. Item 30: Rx is single-threaded by default
2. Item 31: Do the order of the subscribeOn and observeOn operators matter?
3. Item 32: Some operators bring a predefined Scheduler
4. Item 33: Negotiating with UI

Optimizing

1. Item 34: Properly canceling the subscription
2. Item 35: When to use Subjects or Traits?

RxJS code snippet

RxJava code snippet

Rules summary

Changelog

1. Revision 1 (07-17-2020)
2. Revision 2 (07-20-2020)