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iOS

Posted by Amin Shariati
Amin Shariati
4,092 Points

Error while using remove method

While following practice shown on the video on Swift 3 Collections and Control Flow I wrote the following code:

// Arrays
var todo: [String] = ["Finish Course", "Start next course", "Shopping"]
todo.append("Write a line of code")
todo += ["drive a car", "check sms"]
todo.insert("Buy fish", atIndex: 0)

// Removing items from array
todo.remove(atIndex: 0)

but I am getting the following error on todo.remove(atIndex: 0):

Playground execution failed: Collection and Control Flow.xcplaygroundpage:17:1: error: value of type '[String]' has no member 'remove'
todo.remove(atIndex: 0)

As per the video the remove method should exist whereas in my case it's not there. Any idea what is happening?

By the way If I replace the code with 

todo.removeAtIndex(0)

then I will get the expected result.

1 Answer

luke jones
luke jones
8,915 Points

Is this in the simulator or playground?

todo.removeAtIndex(0)

is swift 2 syntax, where as 

todo.remove(at: 0)

is swift 3

Amin Shariati
Amin Shariati
4,092 Points

I am using it in Playground.

Thanks didn't know it was a version related issue. So the training examples are based on Swift 3.0 and my Xcode is using the old Swift.