Define setState().

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 We use it for managing the local state in a similar stateful widget and its child. The downside is everything is in the same class like UI code, business logic, and mixin UI, which splits clean code principles.

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What are the functions to be used to get the image’s properties (size, width, and height)?
What are the functions to be used to get the image’s properties (size, width, and height)? -

The functions are getimagesize() for size, imagesx() for width and imagesy()...

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