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Relative imports in Python 3
...y name. [...] When it [the attribute] is present, relative imports will be based on this attribute
rather than the module __name__ attribute. [...] When the main module is specified by its filename, then the __package__ attribute will be set to None. [...] When the import system encounters an expl...
How do I grab an INI value within a shell script?
... a single value just grep for it:
source <(grep var1 file.ini)
For the demo, check this recording at asciinema.
It is simple as you don't need for any external library to parse the data, but it comes with some disadvantages. For example:
If you have spaces between = (variable name and value), t...
How to get a complete list of object's methods and attributes?
...letion: in addition to dir(), look for __class__, and then to go for its __bases__:
# code borrowed from the rlcompleter module
# tested under Python 2.6 ( sys.version = '2.6.5 (r265:79063, Apr 16 2010, 13:09:56) \n[GCC 4.4.3]' )
# or: from rlcompleter import get_class_members
def get_class_member...
Proper stack and heap usage in C++?
...There is no absolute divide between data on the stack and data on the heap based on how you declare it. For example:
std::vector<int> v(10);
In the body of a function, that declares a vector (dynamic array) of ten integers on the stack. But the storage managed by the vector is not on the st...
Is there a way to break a list into columns?
...created a library which does that - https://github.com/yairEO/listBreaker
Demo page
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What do querySelectorAll and getElementsBy* methods return?
...hen to use which method it's up to you/your project/your device.
Infos
Demo of all methods
NodeList Documentation
Performance Test
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Database Design for Tagging
How would you design a database to support the following tagging features:
12 Answers
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How do I enable file editing in Visual Studio's debug mode?
...e ENC by default and it must be explicitly enabled
You may be running on a 64 bit OS and have your .Net app set to "Any CPU". ENC is not available on 64 bit (CLR limitation). You'll have to set the app back to x86 for ENC to work
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How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
...ray a{1, 2, 3, 4};
return 0;
}
Compiled with -std=c++1z flag under x86-64 gcc 7.0
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How to use permission_required decorators on django class-based views
...n in all the views, and in some of them, specific permissions. In function-based views I do that with @permission_required() and the login_required attribute in the view, but I don't know how to do this on the new views. Is there some section in the django docs explaining this? I didn't found anythi...