代码重构之分解临时变量

Posted 2020-09-13 编程随想曲

意图

• 如果临时变量承担多个责任，它就应该被替换（分解）为多个临时变量，每个变量只承担一个责任

示例

/**
 * Created by luo on 2017/4/24.
 */
public class SplitTemporaryVariableBefore {
    private double _height;
    private double _width;

    public void test(){
        double temp = 2 * (_height + _width);
        System.out.println(temp);
        temp = _height * _width;
        System.out.println(temp);
    }
}
/**
 * Created by luo on 2017/4/24.
 */
public class SplitTemporaryVariableAfter {
    private double _height;
    private double _width;

    public void test(){
        final double perimeter = 2 * (_height + _width);
        System.out.println(perimeter);
        final double area = _height * _width;
        System.out.println(area);
    }
}