Ray Wenderlich Fundamentals Course - Part 4

Here we go! Last chapter of the course for fundamentals. This one is a bit longer so may need two entries. Let's go!

Start Time - 17:39

Compound types - e.g. for tuples. This is about information being bundled together.

Value and reference types - we'll be coming to that!

Functions

func printPass(grade: Int, pass: Int) {

    if grade >= pass {

        print("Your grade score of \(grade) has passed! You passed by \(grade - pass).")

    } else {

        print("Your grade score of \(grade) did not pass!")

    }

}

printPass(grade: 72, pass: 50)

I've elaborated on this a bit. 

OK, difference between parameter and argument. It's called parameter when declared. When called, and providing values, it is an argument! Cool, that does clarify. 

func printHighestGrade(_ grade1: Int, _ grade2: Int) {

    

    print(grade1 > grade2 ? grade1 : grade2)

    

}

printHighestGrade(44, 56)

Good use of the ternary operator above. 

Functions represent tasks or actions. So it is convention to use verbs. Most important thing is staying consistent in the naming. 

*Paused for around 15 mins. 

Mention of type alias. Use of when calling function to create a new type. 

Challenge no problem at all. 

So that's all functions done. 

Finish Time - 18:31 (37 minutes total)

So all functions done. And all good! Will finish off rest of the chapter tomorrow.