在结构内部初始化向量
[英]Initialize a vector inside a struct
问题描述
I have the following struct: 
我有以下结构：
struct MsgProperties
{
DWORD msgSize;
std::vector<BYTE> vbuffer;
//-Constructor
MsgProperties(DWORD A = 0) : msgSize(A){}
};
I want to use that struct with a c++ vector so this is what I've done: 我想将该结构与C ++向量一起使用，所以这就是我所做的：
std::vector<MsgProperties> ReadText;
BYTE buffer[MAX_BUFFER_SIZE];
DWORD bytesRead;
do
{
bytesRead = myFile.Read(buffer, MAX_BUFFER_SIZE);
ReadText.push_back(MsgProperties(bytesRead, std::vector<BYTE>((BYTE*)buffer, (BYTE*)buffer + bytesRead)));
} while (bytesRead > 0);
but I can't figure out how to make it work correctly. 但我不知道如何使其正常工作。 Can someone tell me what I am missing? 有人可以告诉我我想念什么吗？
1 个解决方案
解决方案1
1 已采纳 2015-09-29 21:21:08
Looks like you need another 2 constructors: 看来您还需要2个构造函数：
MsgProperties(DWORD A, const std::vector<BYTE>& vec) : msgSize(A), vbuffer(vec) {}
MsgProperties(DWORD A, std::vector<BYTE>&& vec) : msgSize(A), vbuffer(vec) {}
Alernatively, a single constructor would be good too: 替代地，单个构造函数也将是不错的：
MsgProperties(DWORD A, std::vector<BYTE> vec) : msgSize(A), vbuffer(std::move(vec)) {}
On a side note, I do not see why you need message size at all. 顺便说一句，我根本看不到为什么您需要消息大小。 the size of the vector is the message size. 向量的大小就是消息的大小。
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