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  1. #include <vector>
  2. #include <cassert>
  3. using namespace std;
  4.  
  5. int main() {
  6.   enum {N = 3};
  7.   int const vecSizes[N] = {7, 2, 10};
  8.   vector<vector<int>> out_buff{N};
  9.  
  10.   assert(out_buff.size() == N);
  11.   assert(out_buff.capacity() == N);
  12.  
  13.   for (int i = 0; i != N; ++i) {
  14.     out_buff.at(i).reserve(vecSizes[i]);
  15.   }
  16.  
  17.   int i = 0;
  18.   for (auto const& vec : out_buff) {
  19.     assert(vec.size() == 0);
  20.     assert(vec.capacity() == vecSizes[i++]);
  21.   }
  22. }
  23.  
Success #stdin #stdout 0s 3464KB
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https://ideone.com/ikm1LR
language:
C++14 (gcc 8.3)
created:
7 years ago
visibility:
public

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