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553 PointsSwift 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
26,676 PointsHi,
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.