5
c++ 结构体初始化的问题
source link: https://www.v2ex.com/t/846596
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用的是 C++11 语法，如下代码：
struct Header {
int x = 1;
int y;
};
struct Packet {
Header h;
};
Packet pkt = {
.h = {
.y = 2,
},
};
int main(int argc, char *argv[]) {
return 0;
}
报错： main.cc:11:8: error: no matching constructor for initialization of 'Header' .h = {
如果去掉 Header 结构体里的 = 1 倒是没问题，使用时自己赋值。不过这个字段是个固定的常量，所以想在定义的时候就设置好，每次使用的时候编译器自动填上这个字段，省的自己赋值。
不知是否有更好的办法。
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