Phpml\NeuralNetwork\Training\Backpropagation::isResultWithinError PHP Method

    private function isResultWithinError(array $result, array $target, float $desiredError)
    {
        foreach ($target as $key => $value) {
            if ($result[$key] > $value + $desiredError || $result[$key] < $value - $desiredError) {
                return false;
            }
        }
        return true;
    }