d语言struct可以支持构造函数重载吗

是的，D语言中的struct可以支持构造函数重载。可以定义多个构造函数，每个构造函数可以接受不同的参数列表。例如：

struct Person {
    string name;
    int age;

    this(string name, int age) {
        this.name = name;
        this.age = age;
    }

    this(string name) {
        this(name, 0);
    }
}

void main() {
    auto p1 = Person("Alice", 25);
    auto p2 = Person("Bob");
    writeln(p1.name, " is ", p1.age, " years old.");
    writeln(p2.name, " is ", p2.age, " years old.");
}

输出结果：

Alice is 25 years old.
Bob is 0 years old.
``