C++ Vector compile error on template struct

Asked Aug 09 '17 at 19:01

Active Aug 09 '17 at 19:01

Viewed 64 times

template<class T>
struct TSData{
    int timestamp;
    T data;
}; 

int main () {
    std::vector<TSData<int>> Gen;   //Compile Error
    std::vector<TSData<int> > Stts; //Compiles fine
}

I'm using Visual c++ 6.0, and I ran into this issue today. I'm wondering why having a space makes the second statement OK. Without the space I would get the following errors:

error C2146: syntax error : missing ',' before identifier 'Stts' 
error C2654: 'OLPkrStts' : attempt to access member outside a member function
error C2143: syntax error : missing '>' before ';'

asked Aug 09 '17 at 19:01

Louie Mayo

3

`>>` is valid only since C++11 – Edgar Rokjān Aug 09 '17 at 19:02
2

@EdgarRokyan, that has been valid for a long time, VS C++ 6.0 is a bit old. That's all. – R Sahu Aug 09 '17 at 19:04
So it's just a nuance of an old C++ compiler then? And they would both compile with a newer compiler? – Louie Mayo Aug 09 '17 at 19:06
2

maybe dupe: https://stackoverflow.com/questions/6695261/template-within-template-why-should-be-within-a-nested-template-arg – NathanOliver Aug 09 '17 at 19:06
1

That's correct. – R Sahu Aug 09 '17 at 19:06
1

Also, unless you have to use Visual c++ 6.0 I would suggest you use MSVS 2017 which is C++11/14(mostly) and some 17 complaint – NathanOliver Aug 09 '17 at 19:07
2

If you have the option, you can download the community editions of the latest VS tools from MS for free. I would strongly advise using them instead of using VS C++ 6.0. – R Sahu Aug 09 '17 at 19:08

C++ Vector compile error on template struct

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