Ok, so I make a small image with my program, but I want to check if it has changed each time I run the program, so I make new one, if it has changed. How can I do that fast, because I don't want to resize image and check.
Well probablly as you sed that is the only proper way, another thing you could do is to put a flag, and make it true when anything changes in the image, in that way you will know what is going on.
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