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How to create a custom string representation for a class object?
...f you have one class that you want to have a custom static repr, the class-based approach above works great. But if you have several, you'd have to generate a metaclass similar to MC for each, and that can get tiresome. In that case, taking your metaprogramming one step further and creating a metacl...
Get __name__ of calling function's module in Python
...frames().values())[0]
>>> print f.f_back.f_globals['__file__']
'/base/data/home/apps/apricot/1.6456165165151/caller.py'
>>> print f.f_back.f_globals['__name__']
'__main__'
For the filename you can also use f.f_back.f_code.co_filename, as suggested by Mark Roddy above. I am not ...
Difference between except: and except Exception as e: in Python
...s not defined ("global name 'asd' is not defined",)
But it doesn't catch BaseException or the system-exiting exceptions SystemExit, KeyboardInterrupt and GeneratorExit:
>>> def catch():
... try:
... raise BaseException()
... except Exception as e:
... print e.mess...
How to serialize SqlAlchemy result to JSON?
...eir children, and all their children... Potentially encode your entire database, basically. When it reaches something its encoded before, it will encode it as 'None'.
A recursive, possibly-circular, selective implementation
Another alternative, probably better, is to be able to specify the fields ...
count number of lines in terminal output
... 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 is the default submit button on an HTML form determined?
...they still get a workable solution but the elements will not be reversed.
Demo
http://codepen.io/Godwin/pen/rLVKjm
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How to remove the querystring and get only the url?
...xtentions or functions. I used this to get the current called file name. $base = basename($_SERVER['REQUEST_URI']); $page = substr($base, 0, strrpos($base, "?"));
– Rob
May 20 '13 at 14:26
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error: cannot dynamic_cast ‘b’ (of type ‘class Base*’) to type ‘c...
error: cannot dynamic_cast ‘b’ (of type ‘class Base*’) to type ‘class Derived*’ (source type is not polymorphic)在将父类型转换为子类型时,可以使用static_cast和dynamic_cast.如果使用dynamic_cast,它要求父类必须为多态的,即要求至少有一个虚函数,因此....
How to return a result (startActivityForResult) from a TabHost Activity?
...Once you get the result in Class B then set the result there (for Class A) based on the result from Class C. I haven't tried this out but I think this should work.
Another thing to look out for is that Activity A should not be a singleInstance activity. For startActivityForResult to work your Class...
Mixin vs inheritance
...
What is the difference between a mixin and inheritance?
A mix-in is a base class you can inherit from to provide additional functionality. Pseudocode example:
class Mixin:
def complex_method(self):
return complex_functionality(self)
The name "mix-in" indicates it is intended to b...