Hi.
I have a std::vector<obj> data; That is Passed to a function like this FunctionName(std::vector<obj> *data);
Then in the function How should I use std::vector data.
Like This
data[0][elementinvector].doobjfunction(); ///Is this valid to use.
or should I use.
(*data)[elementinvector].doobjfunction();
Are they both doing the same thing just wondering.
Pass it by reference instead and forget about pointers and dereferencing them.
FunctionName(std::vector<obj> &data);
(*data)[index];
data->operator[](index);
data->at(index); // not quite the same as at() will bounds check, operator[] does not
The previous answers are the correct ones. However,
data[0][elementinvector].doobjfunction(); ///Is this valid to use.
is valid and would work, to answer your question. It would be a really poor idea though, and would confuse anyone that ever looked at your code, because it misleads you to believe there is potential for multiple "std::vector<obj>"s in "data".
