Interview: zip() question-answer pairs

Pair up question ids and answers with zip.

1. Solve the task in the editor — no long theory.
2. Run the check and compare your output with the expected result.
3. Stuck? Open the solution and carry the approach into your own code.

const { of, zip, map } = Rx;

const questions$ = of('q1', 'q2');
const answers$ = of('A', 'B');

const result$ = zip(questions$, answers$).pipe(
  map(([question, answer]) => question + ':' + answer)
);

result$.subscribe(value => console.log(value));