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PracticeInterview: map() an object field
PRACTICE · 12 · 練

Interview: map() an object field

From a stream of users, output only the name field.

  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.
Solution spoiler · click to reveal
const { from, map } = Rx;

const users = [{ name: 'Ana' }, { name: 'Bo' }];

const result$ = from(users).pipe(
  map(user => user.name)
);

result$.subscribe(value => console.log(value));
script.ts // TypeScript
CONSOLE · Console output
Hit Run to see the result...