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  r58745 | georg.brandl | 2007-11-01 10:19:33 -0700 (Thu, 01 Nov 2007) | 2 lines

  #1364: os.lstat is available on Windows too, as an alias to os.stat.
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  r58750 | christian.heimes | 2007-11-01 12:48:10 -0700 (Thu, 01 Nov 2007) | 1 line

  Backport of import tests for bug http://bugs.python.org/issue1293 and bug http://bugs.python.org/issue1342
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  r58751 | christian.heimes | 2007-11-01 13:11:06 -0700 (Thu, 01 Nov 2007) | 1 line

  Removed non ASCII text from test as requested by Guido. Sorry :/
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  r58753 | georg.brandl | 2007-11-01 13:37:02 -0700 (Thu, 01 Nov 2007) | 2 lines

  Fix markup glitch.
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  r58757 | gregory.p.smith | 2007-11-01 14:08:14 -0700 (Thu, 01 Nov 2007) | 4 lines

  Fix bug introduced in revision 58385.  Database keys could no longer
  have NULL bytes in them.  Replace the errant strdup with a
  malloc+memcpy.  Adds a unit test for the correct behavior.
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  r58758 | gregory.p.smith | 2007-11-01 14:15:36 -0700 (Thu, 01 Nov 2007) | 3 lines

  Undo revision 58533 58534 fixes.  Those were a workaround for
  a problem introduced by 58385.
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  r58759 | gregory.p.smith | 2007-11-01 14:17:47 -0700 (Thu, 01 Nov 2007) | 2 lines

  false "fix" undone as correct problem was found and fixed.
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  r58765 | mark.summerfield | 2007-11-02 01:24:59 -0700 (Fri, 02 Nov 2007) | 3 lines

  Added more file-handling related cross-references.
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  r58766 | nick.coghlan | 2007-11-02 03:09:12 -0700 (Fri, 02 Nov 2007) | 1 line

  Fix for bug 1705170 - contextmanager swallowing StopIteration (2.5 backport candidate)
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  r58784 | thomas.heller | 2007-11-02 12:10:24 -0700 (Fri, 02 Nov 2007) | 4 lines

  Issue #1292: On alpha, arm, ppc, and s390 linux systems the
  --with-system-ffi configure option defaults to "yes" because the
  bundled libffi sources are too old.
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  r58785 | thomas.heller | 2007-11-02 12:11:23 -0700 (Fri, 02 Nov 2007) | 1 line

  Enable the full ctypes c_longdouble tests again.
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  r58796 | georg.brandl | 2007-11-02 13:06:17 -0700 (Fri, 02 Nov 2007) | 4 lines

  Make "hashable" a glossary entry and clarify docs on __cmp__, __eq__ and __hash__.
  I hope the concept of hashability is better understandable now.
  Thanks to Tim Hatch for pointing out the flaws here.
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This commit is contained in:
Guido van Rossum 2007-11-02 23:46:40 +00:00
parent e845c0f922
commit 2cc30daa86
20 changed files with 139 additions and 85 deletions
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4
Doc/library/weakref.rst
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@ -85,7 +85,7 @@ Extension types can easily be made to support weak references; see
but cannot be propagated; they are handled in exactly the same way as exceptions
raised from an object's :meth:`__del__` method.
Weak references are hashable if the *object* is hashable. They will maintain
Weak references are :term:`hashable` if the *object* is hashable. They will maintain
their hash value even after the *object* was deleted. If :func:`hash` is called
the first time only after the *object* was deleted, the call will raise
:exc:`TypeError`.
@ -104,7 +104,7 @@ Extension types can easily be made to support weak references; see
the proxy in most contexts instead of requiring the explicit dereferencing used
with weak reference objects. The returned object will have a type of either
``ProxyType`` or ``CallableProxyType``, depending on whether *object* is
callable. Proxy objects are not hashable regardless of the referent; this
callable. Proxy objects are not :term:`hashable` regardless of the referent; this
avoids a number of problems related to their fundamentally mutable nature, and
prevent their use as dictionary keys. *callback* is the same as the parameter
of the same name to the :func:`ref` function.