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For finding difference between two versions of a file on Linux, you can use any one of the 4 tools explained in this article — diff, colordiff, wdiff, and vimdiff. The screenshots provided for these tools shows the difference between the following two empfile1.txt and empfile2.txt. $ ...
{2,5,7};std::vector<int>diff;std::set_difference(v1.begin(), v1.end(), v2.begin(), v2.end(),std::inserter(diff, diff.begin()));std::cout<<v1<<" ∖ "<<v2<<" == "<<diff<<"\n\n";// we want to know which orders "cut" between old and new states:std::vector...