Project Reactor · interview question
In Project Reactor, what is the main purpose of the flatMap() operator in a Flux?
Multiple choiceMediumchapter-19-curatedpremiumproject-reactorproject-reactor-flux
Answer and explanation
Correct answer
D. To transform each element into a Publisher and flatten the result
Why
The flatMap() operator transforms each element into a Publisher and then flattens the emitted items into a single Flux. It is used for asynchronous operations that return a Flux or Mono.
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