One-liner to check existence of image

[Gabriel Zachmann]

I seem to remember having seem some code that checked with a one-liner whether a file path is an image that could be loaded by NSImage's initWithContentsOfFile:, before actually going ahead and doing the initWithContentsOfFile:

Any comments and insights will be appreciated.

Best regards,
Gabriel.

Now, I can't remember that one-liner, and I don't see why I couldn't just do a initWithContentsOfFile, and then check whether it returned nil.

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