Lecture 7 - Asynchronous Tasks

Question 1

What is std::async?

Answer 1

Creates an asynchronous task (higher level than threads) to complete alongside current thread.

Question 2

What type is std::async?

Answer 2

std::future<>, this is a value that is to be evaluated in the future

Question 3

What is a future handle?

Answer 3

represents a value to be computed

Question 4

How to get the value of future?

Answer 4

_.get()

Question 5

What happens if value of async task is not ready and we call .ge()?

Answer 5

We are blocked until ready

Question 6

Is future first class?

Answer 6

yes

Question 7

Is having too many threads bad?

Answer 7

Could be yes, as the time it takes to start x amount of threads can outweight the time of execution