- Explain why side-effects must be as small as possible (in terms of code size)
- What is the advantage of a protocol implemented without I/O?
- What is the purpose of splitting logging and monitoring from features?
- Cite three reasons why an application does not behave as expected
- How can a trace observer be used to debug an application where nothing happens?
- What issue can occur when creating an observable without specifying a scheduler?
- What issue can occur when a cold observable is subscribed to several times?
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