17、C 类构造与静态成员深入解析

C# 类构造与静态成员深入解析

构造函数链与可选参数

在 C# 中，构造函数链是一种实用的技术。以 Motorcycle 类为例：

class Motorcycle
{
    public int driverIntensity;
    public string driverName;

    // Constructor chaining.
    public Motorcycle() {}
    public Motorcycle(int intensity)
        : this(intensity, "") {}
    public Motorcycle(string name)
        : this(0, name) {}

    // This is the 'master' constructor that does all the real work.
    public Motorcycle(int intensity, string name)
    {
        if (intensity > 10)
        {
            intensity = 10;
        }
        driverIntensity = intensity;
        driverName = name;
    }
}

使用 this 关键字进行构造函数链调用并非强制要求，但使用该技术能使类定义更易于维护和简洁。其工作流程如下：
1. 调用需要单