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How to add property to a class dynamically?
...plementation of a thing called a descriptor. It's an object that provides custom handling for a given attribute, on a given class. Kinda like a way to factor a huge if tree out of __getattribute__.
When I ask for foo.b in the example above, Python sees that the b defined on the class implements t...
Is there a way to chain multiple value converters in XAML?
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If you use bindings heavily, writing custom converter to chain converters ends up with tons of dumb converters for all sorts of configurations. In that case the accepted answer is a wonderful solution.
– Jacek Gorgoń
Dec 1...
SQlite Getting nearest locations (with latitude and longitude)
...);
double d = R * c;
return d;
}
Enjoy!
I used and customized this reference and completed it.
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Facebook database design?
...t of data and search it in a quick way. I've seen people complaining about custom made social network scripts becoming slow when the user base grows. After I did some benchmarking myself with just 10k users and 2.5 million friend connections - not even trying to bother about group permissions and li...
What is a memory fence?
... cover the core of it. However, for lock-free programming and implementing custom, lightweight synchronization patterns, you often need just the barrier, or even a one-way barrier only.
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How to use double or single brackets, parentheses, curly braces
...tem processes reads the values of these predefined environment variables. Custom-build-steps are just normal shell-scripts (bash or other) and have access to the same vars.
– Motti Shneor
May 7 '17 at 11:32
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Multiple GitHub Accounts & SSH Config
...-t rsa, it will give you a default file name, that is where you enter your custom file name.
– Donato
Sep 26 '16 at 16:29
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Grouped LIMIT in PostgreSQL: show the first N rows for each group?
I need to take the first N rows for each group, ordered by custom column.
5 Answers
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What is the difference between pip and conda?
...lled anaconda.org) to allow regular package developers to create their own custom (built!) software stacks that their package-users will be able to conda install from.
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Understand the “Decorator Pattern” with a real world example
...d pizzas will be decorated by those toppings' decorators. Practically each customer would want toppings of his desire and final bill-amount will be composed of the base pizzas and additionally ordered toppings. Each topping decorator would know about the pizzas that it is decorating and it's price. ...