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Representing graphs (data structure) in Python

...f._graph[node2].add(node1) def remove(self, node): """ Remove all references to node """ for n, cxns in self._graph.items(): # python3: items(); python2: iteritems() try: cxns.remove(node) except KeyError: pass tr...
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postgresql - sql - count of `true` values

... You can actually omit ELSE null to get the same result. – 200_success May 12 '16 at 18:26  |...
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Sort a list by multiple attributes?

... answered Nov 20 '10 at 15:32 Mark ByersMark Byers 683k155155 gold badges14681468 silver badges13881388 bronze badges ...
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A fast method to round a double to a 32-bit int explained

... this: and it can be seen as two 32-bit integers; now, the int taken in all the versions of your code (supposing it's a 32-bit int) is the one on the right in the figure, so what you are doing in the end is just taking the lowest 32 bits of mantissa. Now, to the magic number; as you correctly ...
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Fitting empirical distribution to theoretical ones with Scipy (Python)?

...error is determined. The distribution with the least error is returned. All Distributions Best Fit Distribution Example Code %matplotlib inline import warnings import numpy as np import pandas as pd import scipy.stats as st import statsmodels as sm import matplotlib import matplotlib.pypl...
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Using module 'subprocess' with timeout

...that contains command's merged stdout, stderr data. check_output raises CalledProcessError on non-zero exit status as specified in the question's text unlike proc.communicate() method. I've removed shell=True because it is often used unnecessarily. You can always add it back if cmd indeed requir...
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Traversing text in Insert mode

...iliar with it. The right way is to press Esc, go where you want to do a small correction, fix it, go back and keep editing. It is effective because Vim has much more movements than usual character forward/backward/up/down. After you learn more of them, this will happen to be more productive. Her...
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What does numpy.random.seed(0) do?

... I'm not very familiar with NumPy's random state generator stuff, so I'd really appreciate a layman's terms explanation of this. ...
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Embedding SVG into ReactJS

...chbook.org/uri/2009/osb"``` from the svg tag, leaving only the xlmns. It's all about tag parsing apparently. Just in case, I've followed these steps as well: blog.logrocket.com/how-to-use-svgs-in-react – Funder Jul 8 at 22:47 ...
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Html List tag not working in android textview. what can i do?

... see in the Html class source code, Html.fromHtml(String) does not support all HTML tags. In this very case, <ul> and <li> are not supported. From the source code I have built a list of allowed HTML tags: br p div em b strong cite dfn i big small font blockquote tt monospace a u sup s...