Differences between revisions 1 and 19 (spanning 18 versions)

Pattern Programming

-  ⇤ ← Revision 1 as of 2003-11-17 22:06:36 → 
  Size: 627
  Editor: yermat
  Comment:
+   ← Revision 19 as of 2004-04-14 09:55:23 → ⇥
  Size: 381
  Editor: mirville
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 3:
-= Singleton =
+= Pattern Programming =
 Line 5:
-=== classmethod ===
----
''' pro '''
+See also :
 * [http://dales.rmplc.co.uk/Duncan/accu/pythonpatterns.html/ Patterns in Python by Duncan Booth]
-Line 9:
+Line 8:
-You can use both as simple class or as a singleton...
+ * Wiki:DesignPatternsBook
 * Thinki:PythonPatterns
 Line 11:
-----
''' cons '''
+=== GoF ===
-Line 14:
+Line 13:
+ * SingletonProgramming
 * ProxyProgramming
-Line 15:
+Line 16:
-{{{
#!python
# Code is Public Domain.
class Singleton:
    _singleton = None
    
    def getSingleton(cls):
        if not Singleton._singleton:
            Singleton._singleton = cls()
        return Singleton._singleton

    getSingleton = classmethod(getSingleton)


class Test(Singleton):
    def test(self):
        print self.__class__,id(self)


t1 = Test.getSingleton()
t2 = Test.getSingleton()

t1.test()
t2.test()
}}}
+=== Other ===
 
 * DelegationEventModel
 * StateProgramming
 * EnumerationProgramming

Page