Steven McWee

We’re kicking it up a notch now as the course starts looking at conditional statements, operators and various types of loop.

We’re eased gently enough into Day 5 with basic if statements that evaluate simple conditions before moving on to if-else and switch for checking multiple conditions.

The next thing we look at is the first genuinely new-to-me programming concept in the course so far, a ternary conditional operator. This neat little piece of syntax lets you check a condition then take one of two actions depending on the result, all in one line of code.

Side note: I also love that the way to remember how to use the ternary statement is the abbreviation WTF (What? True : False) 🤣.

In Day 6 we go over for and while loops. There’s some new stuff in here for me too such as break and continue for these types of loop.

Checkpoint 3

Ah yes, FizzBuzz. Checkpoint 3 is that classic and simple programming challenge. For anyone not familiar, the idea is to loop through each number from 1 to 100 and:

1. If it’s a multiple of 3, print “Fizz”
2. If it’s a multiple of 5, print “Buzz”
3. If it’s a multiple of 3 and 5, print “FizzBuzz
4. Otherwise just print the number

There are so many ways to solve this with even just the basic knowledge we’ve got so far. The most obvious one for me was a series of if else statements:

for i in 1...100 {
    if i.isMultiple(of: 3) && i.isMultiple(of: 5) {
        print("FizzBuzz")
    } else if i.isMultiple(of: 3) {
        print("Fizz")
    } else if i.isMultiple(of: 5) {
        print("Buzz")
    } else {
        print(i)
    }
}

Just for fun I decided to try and do this as a ternary conditional as well. This looks hideous but also works perfectly!

for i in 1...100 {
    i.isMultiple(of: 3) && i.isMultiple(of: 5) ? print("FizzBuzz") : i.isMultiple(of: 3) ? print("Fizz") : i.isMultiple(of: 5) ? print("Buzz") : print(i)
}