[Subversion] / AddOns / README.txt  

Diff of /AddOns/README.txt

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version 2727, Fri Apr 3 23:33:46 2015 UTC version 2728, Fri Apr 3 23:43:33 2015 UTC
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     ...         self.saved = False      ...         self.saved = False
     ...     def save_if_needed(self):      ...     def save_if_needed(self):
     ...         if not self.saved:      ...         if not self.saved:
     ...             print "saving"      ...             print("saving")
     ...             self.saved = True      ...             self.saved = True
   
     >>> class Thing: pass      >>> class Thing: pass
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     >>> something = Thing()      >>> something = Thing()
     >>> Index(something, "x>y")["a"] = "b"      >>> Index(something, "x>y")["a"] = "b"
     >>> dir(something)      >>> [key for key in something.__dict__ if not isinstance(key, str)]
     ['__doc__', '__module__', (<class 'Index'>, 'x>y')]      [(<class 'Index'>, 'x>y')]
   
     >>> "a" in Index(something, "z<22")      >>> "a" in Index(something, "z<22")
     False      False
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     >>> Index(something, "x>y").expression      >>> Index(something, "x>y").expression
     'x>y'      'x>y'
   
     >>> dir(something)      >>> keys = [key for key in something.__dict__ if not isinstance(key, str)]
     ['__doc__', '__module__', (<class 'Index'>, 'x>y'), (<class 'Index'>, 'z<22')]      >>> keys.sort()
       >>> keys
       [(<class 'Index'>, 'x>y'), (<class 'Index'>, 'z<22')]
   
     >>> Index.exists_for(something, 'x>y')      >>> Index.exists_for(something, 'x>y')
     True      True
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     >>> Leech(something, 42)      >>> Leech(something, 42)
     Traceback (most recent call last):      Traceback (most recent call last):
       ...        ...
     TypeError: addon_key() takes exactly 1 argument (2 given)      TypeError: addon_key() takes exactly 1 ...argument (2 given)
   
 Naturally, your ``addon_key()`` and ``__init__()`` (and/or ``__new__()``)  Naturally, your ``addon_key()`` and ``__init__()`` (and/or ``__new__()``)
 methods should also agree on how many arguments there can be, and what they  methods should also agree on how many arguments there can be, and what they
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 usually be deleted as soon as the subject is::  usually be deleted as soon as the subject is::
   
     >>> def deleting(r):      >>> def deleting(r):
     ...     print "deleting", r      ...     print("deleting "+str(r))
   
     >>> from weakref import ref      >>> from weakref import ref
   
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     >>> class SpecialMethodRegistry(ClassAddOn):      >>> class SpecialMethodRegistry(ClassAddOn):
     ...     def __init__(self, subject):      ...     def __init__(self, subject):
     ...         print "init called for", subject      ...         print("init called for "+str(subject))
     ...         self.special_methods = {}      ...         self.special_methods = {}
     ...         super(SpecialMethodRegistry, self).__init__(subject)      ...         super(SpecialMethodRegistry, self).__init__(subject)
     ...      ...
     ...     def created_for(self, cls):      ...     def created_for(self, cls):
     ...         print "created for", cls.__name__      ...         print("created for "+cls.__name__)
   
     >>> class Demo:      >>> class Demo:
     ...     def dummy(self, foo):      ...     def dummy(self, foo):
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 the subject is not ``None``::  the subject is not ``None``::
   
     >>> SpecialMethodRegistry(float)      >>> SpecialMethodRegistry(float)
     init called for <type 'float'>      init called for <... 'float'>
     created for float      created for float
     <SpecialMethodRegistry object at ...>      <SpecialMethodRegistry object at ...>
   
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     ...         from threading import RLock      ...         from threading import RLock
     ...         self.lock = RLock()      ...         self.lock = RLock()
     ...     def acquire(self):      ...     def acquire(self):
     ...         print "acquiring"      ...         print("acquiring")
     ...         self.lock.acquire()      ...         self.lock.acquire()
     ...     def release(self):      ...     def release(self):
     ...         self.lock.release()      ...         self.lock.release()
     ...         print "released"      ...         print("released")
   
     >>> def synchronized(func):      >>> def synchronized(func):
     ...     def wrapper(self, *__args,**__kw):      ...     def wrapper(self, *__args,**__kw):
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     >>> class AnotherThing:      >>> class AnotherThing:
     ...     def ping(self):      ...     def ping(self):
     ...         print "ping"      ...         print("ping")
     ...     ping = synchronized(ping)      ...     ping = synchronized(ping)
   
     >>> AnotherThing().ping()      >>> AnotherThing().ping()

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