vector vector string fixed size

Question

How can i declare such a vector, something like this vector<vector<string>>vec(1)(2) for the usage of vec[0][0] and vec[0][1] without using dinamic sizes with push_back.

The size of an std::vector can expand at run-time, and does not work as a multidimensional array. Nesting two vectors would give you freedom to have sub-vectors of different sizes for each dimension, which is probably not what you want. Take a look at Boost.MultiArray, perhaps it will help. — Andy Prowl
– Andy Prowl, Commented Mar 16, 2013 at 22:35

Cheers and hth. - Alf · Accepted Answer · 2013-03-16 22:42:17Z

5

using namespace std;
array< array< string, 2 >, 1 > vec;

std::vector is for dynamic size arrays.
std::array (C++11, or use Boost library) is for fixed size arrays.

answered Mar 16, 2013 at 22:42

Cheers and hth. - Alf

146k15 gold badges218 silver badges342 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Jesse Good · Accepted Answer · 2013-03-16 22:42:43Z

3

std::vector<std::vector<string>> vec(1, std::vector<string>(2));

Then you can access vec[0][0] and vec[0][1]. (You can change the size of the vector though).

edited Mar 16, 2013 at 22:42

answered Mar 16, 2013 at 22:35

Jesse Good

52.8k15 gold badges133 silver badges174 bronze badges

Collectives™ on Stack Overflow

vector vector string fixed size

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related