How do I declare a vector of size 30 with 30 empty vectors. I've tried
vector< vector<T> > vec(30);
But it returns with errors:
./HashSet.h:62:28: error: expected parameter declarator
vector< vector<T> > table(30);
^
./HashSet.h:62:28: error: expected ')'
./HashSet.h:62:27: note: to match this '('
vector< vector<T> > table(30);
This creates a vector of 30 vectors of 30 elements each:
vector< vector<T> > vec(30, vector<T>(30));
But it requires that T is default-constructible.
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