← Questions
Implement an event emitter
0
I was asked this
No reports yet. Sign in to say where you were asked it.
Implement an event emitter class: on(event, handler), off(event, handler), once(event, handler) and emit(event, ...args). Handlers run in the order they were added. Handle a handler that removes itself or adds another handler during emit, and return a way to unsubscribe from on.
No official answer yet. Write yours on the right and run it.
Nothing published yet.
Sign in to submit your code; every attempt is kept here.
Write and test your solution herePython in your browser, the question's tests level by level, every submission kept for you.Sign in to start coding