struct the_raw_data {
double data;
double other;
};
int testingReadFunctionsout() {
std::vector<the_raw_data> &thevector; /*Here is where the initialization needs to happen*/
return 0;
}
I am getting the following error:
main.cpp: In function ‘std::vector<the_raw_data>& readDataFromFileOut(std::__cxx11::string)’: main.cpp:108:29: error: ‘v’ declared as reference but not initialized std::vector<the_raw_data>& v;
The error is self-explanatory:
'v' declared as reference but not initialized
You have declared a variable v
that is a reference , but it does not reference anything:
std::vector<the_raw_data> &thevector; // what is thevector pointing at? NOTHING!
You can't have uninitialized references in C++. A reference is just an alias for another object, so you have to initialize it to point at something (in practical terms, think of a reference as being like a pointer that can never be NULL, because that is how most compilers actually implement it), eg:
std::vector<the_raw_data> &thevector = SomeOtherObject;
Where SomeOtherObject
is another std::vector<the_raw_data>
object elsewhere in memory.
If you want v
to be an actual std::vector<the_raw_data>
object of its own, just get rid of the &
in the variable declaration:
std::vector<the_raw_data> thevector;
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