Cannot convert value of type 'Meme!' to expected argument type '@noescape (Meme) throws -> Bool'

Question

Here is the code:

    @IBAction func deleteMeme(sender: UIBarButtonItem) {
       if let foundIndex = MemeRepository.sharedInstance.memes.indexOf(selectedMem         


        

Answer 1

If you want to put the comparison inside the indexOf method itself, do it like this:

if let foundIndex = MemeRepository.sharedInstance.memes.indexOf({
  UIImagePNGRepresentation($0.memedImage) == UIImagePNGRepresentation(selectedMeme.memedImage)})

Probably not the best way to compare images. If you know the images are the same object, you can use:

.indexOf({$0.memedImage == selectedMeme.memedImage})

but if you want to compare them pixel by pixel or compare the same image scaled to different sizes, that is a little more complicated.