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iOS Swift Basics (retired) Collections Modifying an Array

What is the difference?

Hello everyone.

What is the difference between

todo.count

and

println (todo.count)

1 Answer

Hey Elliott, I'm guessing you're confused because we use the playgrounds for this course. The playgrounds show you a result of the line of code that you type, and if you type todo.count and println(todo.count), it will look like the same output. This, however, is not the case. If you typed out todo.count in a real program, the computer would perform the calculation, but wouldn't do anything with it. If you typed out println(todo.count) in a program, the computer would see that you want the length of the todo array to be printed to the console. I hope this helps.