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Why do python lists have pop() but not push()
...t on the top and "pushing" down. "Pushing" at the front makes no sense (at least not linguistically). And just to make things even more confusing, C++ uses "push_front" and "push_back".
– JesperE
Sep 23 '13 at 9:09
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Determine the type of an object?
...o that" part. But indeed to tell someone not to do something you should at least explain why not and I figured this was a relevant opportunity to do just that. I meant for the cautious method to look ugly and illustrate why they might not want to do
When should I use Lazy?
...he fastest, because it populated its properties during instantiation. (At least that is what it should have done but why was it's instantiation result so much quicker than a single linear interpolation? When exactly is it doing these interpolations?)
Unfortunately it looks like there is some auto...
Detect and exclude outliers in Pandas data frame
... your dataframe and would like to remove all rows that have outliers in at least one column, the following expression would do that in one shot.
df = pd.DataFrame(np.random.randn(100, 3))
from scipy import stats
df[(np.abs(stats.zscore(df)) < 3).all(axis=1)]
description:
For each column, fi...
What is the difference between statically typed and dynamically typed languages?
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This makes a lot of sense. I think it explains at least the reasoning behind the names much better than other answers here.
– JamEngulfer
Feb 24 '16 at 11:37
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How do I call one constructor from another in Java?
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Initialization should proceed from least to greatest - I would never have a default constructor call up the chain to a multi-parameter constructor. What needs to happen is that all constructors call either the default or a constructor with less parameters.
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What scalability problems have you encountered using a NoSQL data store? [closed]
...job there... 0o).
In a summary, CouchDB was surely the best choice (or at least a better choice than MySQL) for this subproject and it does its job well.
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Synchronization vs Lock
..., or wait / notify
However, concurrency is tricky, and most people get at least some parts of it wrong, making their code either incorrect or inefficient (or both).
The concurrent API provides a higher-level approach, which is easier (and as such safer) to use. In a nutshell, you should not need t...
Find unique rows in numpy.array
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unique_a = np.unique(b).view(a.dtype).reshape(-1, a.shape[1])
Also, at least on my system, performance wise it is on par, or even better, than the lexsort method:
a = np.random.randint(2, size=(10000, 6))
%timeit np.unique(a.view(np.dtype((np.void, a.dtype.itemsize*a.shape[1])))).view(a.dtype)...
Why don't structs support inheritance?
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At least by preventing struct inheritance we have a separate keyword and can more easily say "structs are special", as opposed to having a "random" limitation in something that works for one set of things (classes) but not for a...