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How do I find the duplicates in a list and create another list with them?
...perform better. This code computes a list of unique elements in the source order:
seen = set()
uniq = []
for x in a:
if x not in seen:
uniq.append(x)
seen.add(x)
or, more concisely:
seen = set()
uniq = [x for x in a if x not in seen and not seen.add(x)]
I don't recommen...
Altering column size in SQL Server
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warning: incompatible implicit declaration of built-in function ‘xyz’
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How can I change CSS display none or block property using jQuery?
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An explanation would be in order.
– Peter Mortensen
May 6 at 13:57
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How to train an artificial neural network to play Diablo 2 using visual input?
...thus you need to implement and combine a lot of different AI approaches in order to solve it.
Several decades of research with a whole team working on it would may not suffice, so if you are alone and working on it in part-time (as you probably have a job for a living) you may spend a whole lifetim...
Python style - line continuation with strings? [duplicate]
...e to consider performance. If you care about differences at runtime on the order of 100 ns, particularly when concatenating hard coded strings, something is wrong.
– nmichaels
Aug 27 '12 at 13:51
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Detect if a NumPy array contains at least one non-numeric value?
...0us
%timeit np.isnan(array1M).any() # 532us
The early-exit method is 3 orders or magnitude speedup (in some cases).
Not too shabby for a simple annotation.
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How can I set a website image that will show as preview on Facebook?
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Difference between jQuery `click`, `bind`, `live`, `delegate`, `trigger` and `on` functions (with an
...event
$().click(); //fires all click event handlers for this element, in order bound
You can view a listing including these shortcuts here.
As for the difference, .trigger() triggers the event handler (but not the default action most of the time, e.g. placing the cursor at the right spot in a c...
How to find the kth smallest element in the union of two sorted arrays?
...of a number of elements in one of the arrays proportional to its length in order to make the run-time logarithmic. (Here we are getting rid of half). In order to do that, we need to select one array whose one of the halves we can safely ignore. How do we do that? By confidently eliminating the half ...