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Swift track - FizzBuzz Generator

I just finished doing the FizzBuzz Generator, why do we add the 0 as described on the video solution ?

Meaning I was able to visualize setting the numbers 1...20, but why do we need to put the 0 for example: if i % 3 == 0 or if i %5 == 0 ?

1 Answer

Chris Shaw
Chris Shaw
26,676 Points


The zero is required as without it the statement can result in something other than true which is not what we're looking, for instance.

if 3 % 3 {
  println("This should never execute!")
} else {
  println("This should execute!")

So in the above example we're expecting a truthy value but instead because 3 % 3 equals 0 it's implied as false because 0 and false are the same thing when compared to each other.