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Python decorators in classes
...
Would something like this do what you need?
class Test(object):
def _decorator(foo):
def magic( self ) :
print "start magic"
foo( self )
print "end magic"
return magic
@_decorator
def bar( self ) :
print "normal call"
test ...
Convert sqlalchemy row object to python dict
...
You may access the internal __dict__ of a SQLAlchemy object, like the following::
for u in session.query(User).all():
print u.__dict__
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im...
Lua简明教程 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ble来管理全局变量的，Lua把这些全局变量放在了一个叫“_G”的Table里。
我们可以用如下的方式来访问一个全局变量（假设我们这个全局变量名叫globalVar）：
1
2
_G.globalVar
_G["globalVar"]
我们可...
How to dynamically load a Python class
Given a string of a Python class, e.g. my_package.my_module.MyClass , what is the best possible way to load it?
10 Answers...
std::function and std::bind: what are they, and when should they be used?
...ere are two left to go.
You can use std::bind to get g:
auto g = bind(f, _1, 4, _2);
This is more concise than actually writing a functor class to do it.
There are further examples in the article you link to. You generally use it when you need to pass a functor to some algorithm. You have a fun...
Python “raise from” usage
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The difference is that when you use from, the __cause__ attribute is set and the message states that the exception was directly caused by. If you omit the from then no __cause__ is set, but the __context__ attribute may be set as well, and the traceback then shows the co...
How do you log all events fired by an element in jQuery?
...JQueryEventHandlersDebugHooks(bMonTrigger, bMonOn, bMonOff)
{
jQuery.fn.___getHookName___ = function()
{
// First, get object name
var sName = new String( this[0].constructor ),
i = sName.indexOf(' ');
sName = sName.substr( i, sName.indexOf('(')-i )...
Merging: Hg/Git vs. SVN
...urial too I suppose) propose the rebase --onto option to rebase (reset the root of the branch) part of a branch:
From Jefromi's post
- x - x - x (v2) - x - x - x (v2.1)
\
x - x - x (v2-only) - x - x - x (wss)
you can untangle this situation where you have patches for the v...
'is' versus try cast with null check
...ing)
{
var x = (string) o;
}
This translates to the following IL:
IL_0000: nop
IL_0001: ldstr "test"
IL_0006: stloc.0 // o
IL_0007: ldloc.0 // o
IL_0008: isinst System.String
IL_000D: ldnull
IL_000E: cgt.un
IL_0010: stloc.1
IL_0011: ldloc....
What is the difference between class and instance attributes?
...> a.foo.append(5)
>>> b.foo
[5]
>>> class A:
... def __init__(self): self.foo = []
>>> a, b = A(), A()
>>> a.foo.append(5)
>>> b.foo
[]
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