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Using property() on classmethods
...te the property on the metaclass.
>>> class foo(object):
... _var = 5
... class __metaclass__(type): # Python 2 syntax for metaclasses
... pass
... @classmethod
... def getvar(cls):
... return cls._var
... @classmethod
... def setvar(cls, value):
.....
编译失败！ Error: Your build failed due to an error in the AAPT stage,...
...tivity> attribute name has invalid character
[java] /tmp/1685410160630_0.39828964915976717-0/youngandroidproject/../build/AndroidManifest.xml:5: Tag <activity> attribute name has invalid character '�'.
[java] May 30, 2023 9:29:27 AM com.google.appinventor.build...
How do I create a namespace package in Python?
...
TL;DR:
On Python 3.3 you don't have to do anything, just don't put any __init__.py in your namespace package directories and it will just work. On pre-3.3, choose the pkgutil.extend_path() solution over the pkg_resources.declare_namespace() one, because it's future-proof and already compatible w...
How can I merge properties of two JavaScript objects dynamically?
...istent in obj1
* @param obj1
* @param obj2
* @returns obj3 a new object based on obj1 and obj2
*/
function merge_options(obj1,obj2){
var obj3 = {};
for (var attrname in obj1) { obj3[attrname] = obj1[attrname]; }
for (var attrname in obj2) { obj3[attrname] = obj2[attrname]; }
retu...
How to use a dot “.” to access members of dictionary?
...ope to help you:
class Map(dict):
"""
Example:
m = Map({'first_name': 'Eduardo'}, last_name='Pool', age=24, sports=['Soccer'])
"""
def __init__(self, *args, **kwargs):
super(Map, self).__init__(*args, **kwargs)
for arg in args:
if isinstance(arg, dict...
Ignore python multiple return value
...
One common convention is to use a "_" as a variable name for the elements of the tuple you wish to ignore. For instance:
def f():
return 1, 2, 3
_, _, x = f()
share
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SQL Server indexes - ascending or descending, what difference does it make?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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How to return a value from __init__ in Python?
I have a class with an __init__ function.
10 Answers
10
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Is it possible to get the iOS 5.1 SDK for Xcode 4.2 on Snow Leopard?
....iphonedevsdk.com has been reported as an attack page and has been blocked based on your security preferences." - I would be very careful :)
– Roel Van de Paar
Jul 12 '12 at 20:37
...
How do I refresh the page in ASP.NET? (Let it reload itself by code)
...s used. If it's used in an action / code block that is specifically called based on an action or condition then it will only fire once every iteration and if coded correctly in isolation.
– Phill Healey
Nov 27 '15 at 16:10
...