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12 lines
470 B
C++
12 lines
470 B
C++
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Matrix3i m = Matrix3i::Random();
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cout << "Here is the initial matrix m:" << endl << m << endl;
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int i = -1;
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for(auto c: m.colwise()) {
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c *= i;
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++i;
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}
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cout << "Here is the matrix m after the for-range-loop:" << endl << m << endl;
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auto cols = m.colwise();
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auto it = std::find_if(cols.cbegin(), cols.cend(),
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[](Matrix3i::ConstColXpr x) { return x.squaredNorm() == 0; });
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cout << "The first empty column is: " << distance(cols.cbegin(),it) << endl;
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