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Fastest way to list all primes below N

...4.0 | | sundaram3 | 416.0 | +---------------------+-------+ Of all the methods tested, allowing numpy, for n=1000000, primesfrom2to was the fastest tested. +---------------------+-------+ | Method | ms | +---------------------+-------+ | primesfrom2to | 15.9 | | p...
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Can I use __init__.py to define global variables?

I want to define a constant that should be available in all of the submodules of a package. I've thought that the best place would be in in the __init__.py file of the root package. But I don't know how to do this. Suppose I have a few subpackages and each with several modules. How can I access th...
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Design patterns or best practices for shell scripts [closed]

...first suggestion is "don't". The reason is that is fairly easy to make a small mistake that hinders your script, or even make it dangerous. That said, I don't have other resources to pass you but my personal experience. Here is what I normally do, which is overkill, but tends to be solid, although...
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How can I create a copy of an object in Python?

...would like to create a copy of an object. I want the new object to possess all properties of the old object (values of the fields). But I want to have independent objects. So, if I change values of the fields of the new object, the old object should not be affected by that. ...
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How do I get the real .height() of a overflow: hidden or overflow: scroll div?

...qual to the minimum clientHeight the element would require in order to fit all the content in the viewpoint without using a vertical scrollbar. It includes the element padding but not its margin. share | ...
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In which case do you use the JPA @JoinTable annotation?

... project_id name name task_id The Project_Tasks table is called a "Join Table". To implement this second solution in JPA you need to use the @JoinTable annotation. For example, in order to implement a uni-directional one-to-many association, we can define our entities as such: Proj...
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How to identify platform/compiler from preprocessor macros?

... I'm sorry, but this answer is quite incorrect on all accounts and doesn't even answer the question. – rubenvb Jan 27 '15 at 20:13 ...
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How to match “any character” in regular expression?

... Not always dot is means any char. Exception when single line mode. \p{all} should be – martian May 25 '17 at 15:26 ...
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Get Root Directory Path of a PHP project

...IR gets the directory of the current file not the project root unless you call it in a file that is in the project root, but as php doesn't have the concept of a project all paths have to be absolute or relative to the current location – MikeT Nov 12 '19 at 14...
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How do I create a namespace package in Python?

In Python, a namespace package allows you to spread Python code among several projects. This is useful when you want to release related libraries as separate downloads. For example, with the directories Package-1 and Package-2 in PYTHONPATH , ...