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What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
...T
macro, it produces a C++ source file
containing the meta-object code for
those classes. Among other things,
meta-object code is required for the
signals and slots mechanism, the
run-time type information, and the
dynamic property system.
...
Do I need to explicitly call the base virtual destructor?
...don't need to call the base destructor, a base destructor is always called for you by the derived destructor. Please see my related answer here for order of destruction.
To understand why you want a virtual destructor in the base class, please see the code below:
class B
{
public:
virtual ~...
Read Excel File in Python
... " PinCode = {4} \n"
" PPTL = {5}"
.format(self.id, self.dsp_name, self.dsp_code,
self.hub_code, self.pin_code, self.pptl))
wb = open_workbook('sample.xls')
for sheet in wb.sheets():
number_of_rows = sheet.nrows
number_of_columns...
How can I include a YAML file inside another?
...data structure, like an array, or as a child of an element, like the value for a certain hash key.
15 Answers
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How do I use the includes method in lodash to check if an object is in the collection?
lodash lets me check for membership of basic data types with includes :
3 Answers
3
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Creating a singleton in Python
This question is not for the discussion of whether or not the singleton design pattern is desirable, is an anti-pattern, or for any religious wars, but to discuss how this pattern is best implemented in Python in such a way that is most pythonic. In this instance I define 'most pythonic' to mean tha...
Why do you need explicitly have the “self” argument in a Python method?
... Although it would be nice to have a less cryptic error message when you forget it.
– Martin Beckett
Feb 3 '09 at 23:51
10
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jQuery Ajax calls and the Html.AntiForgeryToken()
...ave implemented in my app the mitigation to CSRF attacks following the informations that I have read on some blog post around the internet. In particular these post have been the driver of my implementation
...
Any way to delete in vim without overwriting your last yank? [duplicate]
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Hah, didn't know about the black hole register. Thanks for the enlightenment.
– DarkDust
Sep 3 '10 at 18:32
13
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Union of dict objects in Python [duplicate]
...uctor:
dict(y, **x)
Duplicates are resolved in favor of the value in x; for example
dict({'a' : 'y[a]'}, **{'a', 'x[a]'}) == {'a' : 'x[a]'}
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