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dft_tools/doc/reference/arrays/lazy.rst
tayral edd1ff4529 Restructuring documentation.
A first general restructuration of the doc according to the pattern [tour|tutorial|reference].
In the reference part, objects are documented per topic.
In each topic, [definition|c++|python|hdf5] (not yet implemented)
2014-10-18 12:21:08 +01:00

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.. highlight:: c
.. _Lazy:
Interaction with CLEF expressions
============================================
* The 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 usually more optimal since the for loops are automatically written in the TraversalOrder of the array.
* **Example**:
.. triqs_example:: ./lazy_0.cpp
.. note::
The syntax uses a <<, not = since the array is not assigned to an expression
but filled by the evaluation thereof.