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iOS Swift Basics (retired) Collections Modifying an Array

why is this not working

todo.append("Debug App","Fix Bugs")

why doesn't that work

var todo = ["Learn Swift", "Build App", "Deploy App"]
todo.append("Debug App", "Fix Bugs")

2 Answers

Chris Shaw
Chris Shaw
26,663 Points

Hi Hunter,

The reason is because the append method only accepts one argument, instead you would either need to call it twice or use the concatenation technique which involves the += operator.

todo.append("Debug App")
todo.append("Fix Bugs")
Using concatenation

This technique isn't as easy to understand because of the array but in simple terms, Swift is taking the array and adding each item onto the end of the todo array.

todo += ["Debug App", "Fix Bugs"]

Happy coding!

I figured it out haha thanks though