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Using global variables between files?
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wow, normally one would expect two files importing each other to get into an infinite loop.
– Nikhil VJ
Aug 24 '18 at 4:11
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Understanding __get__ and __set__ and Python descriptors
... in the comments, if you simply try Temperature.celsius, instance will be None.
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JQuery to check for duplicate ids in a DOM
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This algorithm is better, requires only one dom traversal instead of one per matched element. Should be the accepted answer.
– m_x
Nov 23 '15 at 14:54
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A non-blocking read on a subprocess.PIPE in Python
... and python will hang, even if the main thread exited, isn't it? how could one work around this? python 2.x doesn't support killing the threads, what's worse, doesn't support interrupting them. :( (obviously one should handle the exceptions to assure the subprocess is shut down, but just in case it ...
Linux: compute a single hash for a given folder & contents?
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One possible way would be:
sha1sum path/to/folder/* | sha1sum
If there is a whole directory tree, you're probably better off using find and xargs. One possible command would be
find path/to/folder -type f -print0 | sort -...
How to use enums as flags in C++?
...swered Sep 19 '09 at 12:37
eidoloneidolon
2,71722 gold badges1313 silver badges55 bronze badges
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Remove credentials from Git
...g with several repositories, but lately I was just working in our internal one and all was great.
35 Answers
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Python: fastest way to create a list of n lists
... in xrange(n)]
is
from itertools import repeat
d = [[] for i in repeat(None, n)]
It does not have 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 actuall...
How to implement the --verbose or -v option into a script?
... print arg,
print
else:
verboseprint = lambda *a: None # do-nothing function
(Yes, you can define a function in an if statement, and it'll only get defined if the condition is true!)
If you're using Python 3, where print is already a function (or if you're willing to ...
How do I write a correct micro-benchmark in Java?
...ot:
Rule 0: Read a reputable paper on JVMs and micro-benchmarking. A good one is Brian Goetz, 2005. Do not expect too much from micro-benchmarks; they measure only a limited range of JVM performance characteristics.
Rule 1: Always include a warmup phase which runs your test kernel all the way thro...