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dft_tools/doc/reference/arrays/containers/view_constructors.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
.. _arr_view_constr:
Constructors of views
================================
Note that in practice, you rarely explicitly construct a view.
Views are normally automatically built by the :ref:`() operator<arr_call>`.
Constructors of array_view
---------------------------------------
Views have `view semantics`, i.e. they **never** make a copy of the data.
+-----------------------------------+---------------------------------------------------------------------------------------+
| Constructors of array_view | Comments |
+===================================+=======================================================================================+
| array_view(const array_view &) | Copy construction: create a new view, viewing the same data. Does **not** copy data |
+-----------------------------------+---------------------------------------------------------------------------------------+
| array_view(const T & X) | T is any type such that X.indexmap() and X.storage() can be used to construct a view. |
+-----------------------------------+---------------------------------------------------------------------------------------+
| array_view(array_view &&) | Move construction (trivial here, a copy constructor is very quick anyway). |
+-----------------------------------+---------------------------------------------------------------------------------------+
| explicit array_view(PyObject * X) | Construct an array_view from the Python object X. Type and rank must match exactly, |
| | or an exception if thrown |
+-----------------------------------+---------------------------------------------------------------------------------------+
| | .. note:: X is a borrowed reference, array does not affect its counting reference. |
+-----------------------------------+---------------------------------------------------------------------------------------+
Constructors of array_const_view
---------------------------------------
+------------------------------------------------------------------------+---------------------------------------------------------------------------------------+
| Constructors of array_const_view<T,R,OptionsFlags, TraversalOrder> | Comments |
+========================================================================+=======================================================================================+
| array_const_view(array_const_view const &) | Create a new view, viewing the same data. Does **not** copy data. (copy constructor) |
+------------------------------------------------------------------------+---------------------------------------------------------------------------------------+
| array_const_view(array_view<T,R,OptionsFlags, TraversalOrder> const &) | Create a new view, viewing the same data. Does **not** copy data |
+------------------------------------------------------------------------+---------------------------------------------------------------------------------------+
| array_const_view(const T & X) | T is any type such that X.indexmap() and X.storage() can be used to construct a view. |
+------------------------------------------------------------------------+---------------------------------------------------------------------------------------+
| array_const_view(array_const_view &&) | Move construction (trivial here, a copy constructor is very quick anyway). |
+------------------------------------------------------------------------+---------------------------------------------------------------------------------------+
| explicit array_const_view(PyObject * X) | Construct an array_view from the Python object X. Type and rank must match exactly, |
| | or an exception if thrown |
+------------------------------------------------------------------------+---------------------------------------------------------------------------------------+
| | .. note:: X is a borrowed reference, array does not affect its counting reference. |
+------------------------------------------------------------------------+---------------------------------------------------------------------------------------+
Constructors of matrix_view, vector_view, matrix_const_view, vector_const_view
-------------------------------------------------------------------------------
Similar to array_view, array_const_view