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fix bugs caused by default copy constructors being called. valgrind,
you saved my life.
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@@ -17,13 +17,11 @@ int main(int, char **)
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cout << "Here is a 2x2 matrix m:" << endl << m << endl;
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cout << "Let us now build a 4x4 matrix m2 by assembling together four 2x2 blocks." << endl;
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Matrix<double,4,4> m2; // dynamic matrix with initial size 4x4 and uninitialized entries
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MatrixXd m2(4,4); // dynamic matrix with initial size 4x4 and uninitialized entries
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// notice how we are mixing fixed-size and dynamic-size types.
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cout << "In the top-left block, we put the matrix m shown above." << endl;
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m2.block(0,1,0,1) = m;
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cout << "m2 is now " << endl << m2 << endl;
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cout << "m2.block(0,1,0,1) has " << m2.block(0,1,0,1).rows() << " rows" << endl;
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cout << "In the bottom-left block, we put the matrix m*m, which is:" << endl << m*m << endl;
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m2.block(2,3,0,1) = m * m;
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cout << "In the top-right block, we put the matrix m+m, which is:" << endl << m+m << endl;
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