3
0
mirror of https://github.com/triqs/dft_tools synced 2024-11-01 11:43:47 +01:00
dft_tools/doc/reference/c++/arrays/element_acces.rst

28 lines
569 B
ReStructuredText
Raw Normal View History

.. highlight:: c
.. _ElementAccess:
Element access
==================================
The elements of the arrays can be naturally accessed using the ( ) operator.
If A is an array<T,R> and i,j,k, its indices
A(i,j,k) is the element (i,j,k) of the array.
.. compileblock::
#include <triqs/arrays.hpp>
namespace tqa=triqs::arrays;
int main(){
tqa::array<double,2> A(2,3);
A() = 0; // assign 0 to a complete view of A.
A(0,0) = 5;
A(1,1) = 2* A(0,0);
std::cout <<"A = "<< A << std::endl;
}