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iOS Swift Basics (retired) Collections Modifying an Array

kevin nadjarian
kevin nadjarian
1,498 Points
Posted by kevin nadjarian
kevin nadjarian
1,498 Points

Order of ARAY

var todo = ["Learn Swift", "Build App", "Deploy App"] todo += ["Debug App", "Fix Bugs"] todo.removeAtIndex(1) let item = todo.removeAtIndex(1) todo.insert("Learn iOS", atIndex: 1)

How come the correct answer todo.removeAtIndex(1) is "1" and not "2" (for removing Deploy App) (1) shouldn't be Build App instead?

Second question why todo.insert("Learn iOS", atIndex: 1) as is insert Learn iOS as the second position as asked....

2 Answers

Jason Lysinger
Jason Lysinger
8,106 Points
Jason Lysinger
Jason Lysinger
8,106 Points

The answer to your first question is because when you declared:

todo.removeAtIndex(1)``` 
You removed the entry "Build App" from the array.
So when you then declared:
```let item = todo.removeAtIndex(1)```
You removed "Deploy App" from the array and store it in the constant "item".

You can do away with the first ```todo.removeAtIndex(1)```

I don't quite understand your second question.