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dft_tools/doc/reference/c++/gf/clef.rst
2014-07-16 23:30:05 +02:00

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.. highlight:: c
.. _gf_clef:
Interaction with CLEF expressions
============================================
The gf containers and their view classes can be used with the :doc:`../clef/contents` library :
* They can be called with CLEF expressions.
* :doc:`Automatic assignment<../clef/assign>` has been set up.
Using the CLEF library offers a quick and efficient way to fill an array with multiple advantages :
* It is simpler and more readeable than a series of for loops.
* It is more optimal since the loops are automatically written in the best order for memory traversal.
**Example** :
.. triqs_example:: ./clef_0.cpp
.. note::
The LHS uses () and not brackets, even though it is on the mesh, because of the strange C++ limitation
that [] cannot be overloaded for several variables...