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Python: fastest way to create a list of n lists
... to create a new int object in every iteration and is about 15 % faster on my machine.
Edit: Using NumPy, you can avoid the Python loop using
d = numpy.empty((n, 0)).tolist()
but this is actually 2.5 times slower than the list comprehension.
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Simple Getter/Setter comments
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My sentiments exactly, the worst are the domain specific models where only a domain expert knows what the heck the property means.
– ThaDon
Jun 23 '09 at 13:20
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Python `if x is not None` or `if not x is None`?
...any case where one really doesn't fit (making the other a clear winner for my convention)?*
9 Answers
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ExecutorService, how to wait for all tasks to finish
... the simplest way to to wait for all tasks of ExecutorService to finish? My task is primarily computational, so I just want to run a large number of jobs - one on each core. Right now my setup looks like this:
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Running Python code in Vim
I am writing Python code using Vim, and every time I want to run my code, I type this inside Vim:
20 Answers
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leiningen - how to add dependencies for local jars?
I want to use leiningen to build and develop my clojure project. Is there a way to modify project.clj to tell it to pick some jars from local directories?
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How to retrieve POST query parameters?
Here is my simple form:
22 Answers
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Why does the Scala compiler disallow overloaded methods with default arguments?
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I have some comments (see my comments below the linked answer) about Scala making overloading frowned upon and a second-class citizen. If we continue to purposely weaken overloading in Scala, we are replacing typing with names, which IMO is a regressi...
How do I commit case-sensitive only filename changes in Git?
...ad idea. This isn't necessarily obvious. For example, I just tried this on my Mac, thinking it would fix my problems, then renamed a file from productPageCtrl.js to ProductPageCtrl.js. git status saw a new file called ProductPageCtrl.js but didn't think that productPageCtrl.js had been deleted. When...
In Django - Model Inheritance - Does it allow you to override a parent model's attribute?
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@NoamG In my original answer, Place was abstract, hence it was not created in database. But OP wanted both Place and LongNamedRestaurant to be created in database. Therefore I updated my answer to add the AbstractPlace model, which is ...