Re: [Boost-users] [Boost.MultiArray]: size question

On 18 December 2012 08:24, gast128 wrote:

I am talking about multi_array, see title. Example code:

void f() { typedef boost::multi_array Matrix;

Matrix m1(boost::extents[2][3]); _ASSERT(m1.size() == 2); _ASSERT(m1[0].size() == 3);

m1.resize(boost::extents[0][3]); _ASSERT(m1.size() == 0); //_ASSERT(m1[0].size() == 3); //<--assert }

Hi, The shape function has the list of multi_array dimensions. This should do it: #include #include <cassert> int main() { typedef boost::multi_array Matrix; Matrix m1(boost::extents[2][3]); assert(m1.shape()[0] == 2); assert(m1.shape()[1] == 3); m1.resize(boost::extents[0][3]); assert(m1.shape()[0] == 0); assert(m1.shape()[1] == 3); return 0; } Cheers, Vitaly