Forget it. Just found the answer myself on Swift ebook. It's a bitwise xor 
operator. And there's no power operator in Swift. Sorry.

I've looked for this for hours. Why did I find the answer after I asked here? 
Life. :)
–Mr Bee

    Pada Minggu, 18 September 2016 19:41, Mr Bee <> menulis:

 Hi all, I wrote this in XCode Playground…
let i = 2^2print(i)
It runs fine without any errors and print 0, while I expect it to print 4 from 
2 power by 2 or 2². Swift ebook and even Google gave me nothing on this.
What did I miss?
Thank you.
–Mr Bee

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