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or by Dennis Ritchie
Published on 2012-12-08T10:50:03Z Indexed on 2012/12/08 11:05 UTC
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I want to create a
vector<vector<int>> where the outer vector is fixed (always containing the same vectors), but the inner vectors can be changed. For example:
int n = 2; //decided at runtime assert(n>0); vector<vector<int>> outer(n); //outer vector contains n empty vectors outer.push_back(vector<int>()); //modifying outer vector - this should be error auto outer_it = outer.begin(); (*outer_it).push_back(3); //modifying inner vector. should work (which it does).
I tried doing simply
const vector<vector<int>>, but that makes even the inner vectors
Is my only option to create my own custom
FixedVectors class, or are there better ways out there to do this?
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