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contract Helloworld {
    uint private simpleInt;

    function getValue() public view returns (uint) {
        return simpleInt;
    }
}

What is the difference between "return" and "returns", I am a beginner.

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The difference is that returns (uint) is defining the function as having 1 return variable, which is a uint. Related, but separate, is the statement return simpleInt;, which is actually returning simpleInt from the function.

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