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Flip 7 Priberam Torrent [2022]







Q: Why is the max in `map` less than the max in `flatMap`? Why does the following code return a list of length 8 while the one in flatMap returns a list of length 3? val xs = List(1, 2, 3, 4, 5, 6, 7, 8) val ys = xs.map(_ + 1) println(xs.length) println(ys.length) xs.max + 1 A: Well, this is because map() applies a function to the elements of a list and returns a list of the values it got from applying the function to each element. That is why it will be shorter. On the other hand, flatMap() applies a function to each element of a list and returns a list of the function outputs. So it will be longer because each element of the list will have a different length for the first element of the list. The Daily Show with Jon Stewart To Air on Hulu - scottily ====== jvandemar I didn't see this. Why was it so hard to find? ~~~ coderdude After a cursory Google search, I didn't see anything. Case: 14-41291 Document: 00513151391 Page: 1 Date Filed: 08/12/2015 IN THE UNITED STATES COURT OF APPEALS FOR THE FIFTH CIRCUIT No. 14-41291 Conference Calendar ac619d1d87


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