如何处理具有不同参数的相同代码路径?

发布于 2024-10-06 11:21:33 字数 1026 浏览 2 评论 0原文

我遇到过一种情况,尝试不必修改底层源代码(它在该级别上并不是真正的“我的”代码;否则,我很想修改它),我有两个几乎相同的代码路径,但是我正在使用的不同类型的数据。

忽略您可能可以相当容易地将一个对象转换为另一个对象,类似的示例将是一个“Circle”对象。

一方面,我有一个 Point 对象和一个半径。另一方面,我有一个 Circle 对象。这两者都可以描述相同的实际圆,但我无法将其转换为另一个。

然后,在我的代码中,我有:

void Run(Circle circle)
{
    if(AllNegative(circle))
    {
        // ...
        // Do unrelated stuff
        // ...
        ColorCircle(circle);
        // ...
    }
}

void Run(Point pt, uint radius)
{
    if(AllNegative(pt, radius))
    {
        // ...
        // Do unrelated stuff
        // ...
        ColorCircle(pt, radius);
        // ...
    }
}

bool AllNegative(Circle circle) { return (circle.AllNegative); }
bool AllNegative(Point pt, uint radius) { return ((pt.X + radius) < 0) && ((pt.Y + radius) < 0); }

void ColorCircle(Circle circle) { /* ... */ }
void ColorCircle(Point pt, uint radius) { /* ... */ }

当然,我在 Run 中的代码比本示例中的代码多。

如何将 Run 合并到单个函数中以最大程度地减少代码重复?

I've encountered a situation where, trying not to have to modify the underlying source (it's not really "my" code at that level; otherwise, I'd love to modify it), I have two almost identical code paths, but with separate types of data I'm using.

Ignoring that you could probably convert one to the other rather easily, a similar example would be a "Circle" object.

On one hand, I have a Point object and a radius. On the other, I have a Circle object. Both of these can describe the same actual circle, but I just can't convert one to another.

Then, in my code, I have:

void Run(Circle circle)
{
    if(AllNegative(circle))
    {
        // ...
        // Do unrelated stuff
        // ...
        ColorCircle(circle);
        // ...
    }
}

void Run(Point pt, uint radius)
{
    if(AllNegative(pt, radius))
    {
        // ...
        // Do unrelated stuff
        // ...
        ColorCircle(pt, radius);
        // ...
    }
}

bool AllNegative(Circle circle) { return (circle.AllNegative); }
bool AllNegative(Point pt, uint radius) { return ((pt.X + radius) < 0) && ((pt.Y + radius) < 0); }

void ColorCircle(Circle circle) { /* ... */ }
void ColorCircle(Point pt, uint radius) { /* ... */ }

Of course, I have more code in Run than in this example.

How do I merge Run into a single function in order to minimize code duplication?

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评论(4

九歌凝 2024-10-13 11:21:33

在这种情况下,您可以采取两条路径:

  1. 您可以将其保留为现在的样子 - 重载方法。
  2. 将重复的代码移至新方法。如果在不相关部分中计算圆的直径(无论是否真实),请创建一个方法calcDiameter(radius)

在这种情况下,如果只有几行代码确实无法使新方法变得实用,那么重复的代码并没有本质上的错误。

There are two paths you could take in this case:

  1. You can leave it just as you have it now - overloaded methods.
  2. Move duplicated code to a new method. If in your unrelated section you calculate the diameter of the circle (realistic or not), create a method calcDiameter(radius).

There's nothing inherantly wrong with duplicated code in this sort of situation, if it's only a couple of lines that really don't make a new method practical.

眼泪都笑了 2024-10-13 11:21:33

一个泛型的例子:

public interface ICircle
{
    Point Point{get;}
    uint Radius{get;}
    ... add whatever you need
}

public class MyCircle: ICircle
{
   private Circle _circle;
   ... implement interface
}

public class MyCircle2: ICircle
{
   private Point _point;
   private uint _radius;
   ... implement interface
}

void Run<T>(T circle) where T: ICircle
{
    if(AllNegative(circle))
    {
        ColorCircle(circle);
    }
}

An example with generics:

public interface ICircle
{
    Point Point{get;}
    uint Radius{get;}
    ... add whatever you need
}

public class MyCircle: ICircle
{
   private Circle _circle;
   ... implement interface
}

public class MyCircle2: ICircle
{
   private Point _point;
   private uint _radius;
   ... implement interface
}

void Run<T>(T circle) where T: ICircle
{
    if(AllNegative(circle))
    {
        ColorCircle(circle);
    }
}
星星的轨迹 2024-10-13 11:21:33

至少,您可以在单独的方法中执行不相关的操作,并从每个Run 中调用它。

At a minimum, you could do your unrelated stuff in a separate method and call it from each Run.

一念一轮回 2024-10-13 11:21:33

您可以为它们创建一个公共接口,如下所示:

public interface IMyShape
{
    public bool IsNegative();
    public void Color();
}

然后您只需要一种接受 IMyShape 引用的方法:

void Run(IMyShape shape)
{
    if(shape.AllNegative())
    {
        // ...
        // Do unrelated stuff
        // ...
        shape.Color();
        // ...
    }
}

You could create a common interface for the both of them that would look something like this:

public interface IMyShape
{
    public bool IsNegative();
    public void Color();
}

Then you would only need one method that accepted an IMyShape reference:

void Run(IMyShape shape)
{
    if(shape.AllNegative())
    {
        // ...
        // Do unrelated stuff
        // ...
        shape.Color();
        // ...
    }
}
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