How to store a ratio in a single variable and read it back in C#

Question

Let's say I have a system that must store how many people voted on fighter A and how many on fighter B.

Let's say ratio is 200:1

如何将该值存储在单个变量中,而不是将两个值(A上的选民数和B上的选民数)存储在两个变量中.

你会怎么做？

Answer 1

从问题措辞的方式来看,这可能不是您正在寻找的答案,但最简单的方法是使用结构:

struct Ratio
{
    public Ratio(int a, int b)
    {
        this.a = a;
        this.b = b;
    }

    public int a = 1;
    public int b = 1;
}

您将几乎肯定要使用属性而不是字段,你可能也想重载==和!=,是这样的:

public static bool operator ==(Ratio x, Ratio y)
{
    if (x.b == 0 || y.b == 0)
        return x.a == y.a;
    // There is some debate on the most efficient / accurate way of doing the following
    // (see the comments), however you get the idea! :-)
    return (x.a * y.b) == (x.b / y.a);
}

public static bool operator !=(Ratio x, Ratio y)
{
    return !(x == y);
}

public override string ToString()
{
    return string.Format("{0}:{1}", this.a, this.b);
}