14 lines
		
	
	
		
			349 B
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			14 lines
		
	
	
		
			349 B
		
	
	
	
		
			C++
		
	
	
	
	
	
| #include <Eigen/Dense>
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| #include <iostream>
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| 
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| using namespace std;
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| 
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| int main() {
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|   Eigen::ArrayXf v(6);
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|   v << 1, 2, 3, 4, 5, 6;
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|   cout << "v.head(3) =" << endl << v.head(3) << endl << endl;
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|   cout << "v.tail<3>() = " << endl << v.tail<3>() << endl << endl;
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|   v.segment(1, 4) *= 2;
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|   cout << "after 'v.segment(1,4) *= 2', v =" << endl << v << endl;
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| }
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