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Fast way of counting non-zero bits in positive integer
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I tried adapting Óscar's and Adam's solutions to process the integer in 64-bit and 32-bit chunks, respectively. Both were at least ten times slower than bin(n).count("1") (the 32-bit version took about half again as much time).
On the other hand, gmpy popcount() took about 1/20th of the time of ...
What's the correct way to convert bytes to a hex string in Python 3?
... convenient transformations like quoted-printable (fits into 7bits ascii), base64 (fits into alphanumerics), hex escaping, gzip and bz2 compression. In Python 2, you could do:
b'foo'.encode('hex')
In Python 3, str.encode / bytes.decode are strictly for bytes<->str conversions. Instead, you...
How to deal with SettingWithCopyWarning in Pandas?
...etitem__ operation may not work.
In general, you should use loc for label-based assignment, and iloc for integer/positional based assignment, as the spec guarantees that they always operate on the original. Additionally, for setting a single cell, you should use at and iat.
More can be found in th...
Can scripts be inserted with innerHTML?
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You could Base64 encode your trigger-image as <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7"> (this will not do a network request) Actually... you do NOT need an image, reference a non-e...
What is an application binary interface (ABI)?
...ses 32-bit integers to indicate the offset of a function and you switch to 64-bit integers, then already-compiled code that uses that library will not be accessing that field (or any following it) correctly. Accessing data structure members gets converted into memory addresses and offsets during co...
Blank space at top of UITextView in iOS 10
...ent answer that IronManGill gave is not a good solution, because it is not based on an understanding of why the problem happens in the first place.
jrturton's answer is also not the cleanest way to solve it. You don't need to override. Keep it simple!
All you need is to set the following:
self.a...
Pandas DataFrame Groupby two columns and get counts
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how to access the value of each group which is sum based on the alphabet and word?
– Rahul Goyal
Mar 5 at 2:52
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How do I install cURL on cygwin?
... this file.so i downloaded this file (or you can do a wget).I am on windows64 bit.So ,if you go to https://cygwin.com/install.html ,you can download setup-x86_64.exe file from the install and updates section,move this setup-x86_64.exe to your c:/cygwin64,and then run it from there ( setup-x86_64.e...
How do I properly clean up Excel interop objects?
...ots" is not sufficient to prevent a problem: stackoverflow.com/questions/4964663/…
– Mike Rosenblum
Feb 13 '11 at 17:22
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How many threads can a Java VM support?
...h spawns 25,000 threads and all those threads write some data in MySql database at regular interval of 2 seconds.
I ran this program with 10,000 threads for 30 minutes continuously then also my system was stable and I was able to do other normal operations like browsing, opening, closing other pro...