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Moves addr out of tutorial into manual, indexing it too.

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Grzegorz Adam Hankiewicz 2013-01-22 16:34:53 +01:00
commit 351e66b767
3 changed files with 29 additions and 17 deletions
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doc/tut1.txt
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@ -1303,14 +1303,10 @@ untraced references are *unsafe*. However for certain low-level operations
Traced references are declared with the **ref** keyword, untraced references
are declared with the **ptr** keyword.
The empty ``[]`` subscript notation can be used to *derefer* a reference,
meaning to retrieve the item the reference points to. The ``addr`` operator
returns the address of an item. An address is always an untraced reference:
``addr`` is an *unsafe* feature.
The ``.`` (access a tuple/object field operator)
and ``[]`` (array/string/sequence index operator) operators perform implicit
dereferencing operations for reference types:
The empty ``[]`` subscript notation can be used to *derefer* a reference,
meaning to retrieve the item the reference points to. The ``.`` (access a
tuple/object field operator) and ``[]`` (array/string/sequence index operator)
operators perform implicit dereferencing operations for reference types:
.. code-block:: nimrod
@ -1327,8 +1323,8 @@ dereferencing operations for reference types:
To allocate a new traced object, the built-in procedure ``new`` has to be used.
To deal with untraced memory, the procedures ``alloc``, ``dealloc`` and
``realloc`` can be used. The documentation of the system module contains
further information.
``realloc`` can be used. The documentation of the `system <system.html>`_
module contains further information.
If a reference points to *nothing*, it has the value ``nil``.