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Is there a math nCr function in python? [duplicate]
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The following program calculates nCr in an efficient manner (compared to calculating factorials etc.)
import operator as op
from functools import reduce
def ncr(n, r):
r = min(r, n-r)
numer = reduce(op.mul, range(n, n-r, -1), 1)
denom = reduce(op.mul, range(1, r+1), 1)
...
When and why should I use a namedtuple instead of a dictionary? [duplicate]
...es. The field name properties are stored in the namedtuple class." twitter.com/raymondh/status/524660721968107521
– Moberg
Oct 31 '14 at 7:48
3
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c/c++如何获取CPU的序列号？ - C/C++ - 清泛网 - 专注C/C++及内核技术
...回的是扩展信息。
继续了解请参考：https://www.tsingfun.com/it/cpp/1965.html
运行结果：
CPU 序列号 cpuid
Google breakpad stackwalker无法加载符号 - 更多技术 - 清泛网 - 专注C/C++及内核技术
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binary = sys.argv[i]
outputFile = basename(binary) + ".sym"
command = '{0} {1} > {2}'.format("dump_syms",binary,outputFile)
print ('--> Running {0}'.format(command) )
os.system(command)
symFile = open(outputFile, 'r')
firstLine = symFile.readline()
print ('First l...
【解决】Python：ModuleNotFoundError: No module named \'google.protobuf...
...ckages
touch google/__init__.py
参考资料：https://stackoverflow.com/questions/38680593/importerror-no-module-named-google-protobuf
python,protobuf
离线版启动超时，有报错日志 - App Inventor 2 离线版 - 清泛IT社区，为创新赋能！
...ava.base/java.net=ALL-UNNAMED, --add-opens, java.base/sun.net.www.protocol.http=ALL-UNNAMED, --add-opens, java.base/sun.net.www.protocol.https=ALL-UNNAMED, -Dfile.encoding=UTF-8, -classpath, D:\appinventor\AppInventor2\resources\app.asar.unpacked\AppEngine\bin\..\lib\appengine-tools-api.jar, com.goo...
Looping through a hash, or using an array in PowerShell
...that. This article does a pretty good explanation of it: technet.microsoft.com/en-us/library/ee692803.aspx
– chazbot7
Dec 28 '17 at 17:28
4
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UITableView with fixed section headers
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Is ASCII code 7-bit or 8-bit?
... the paper "The Evolution of Character Codes, 1874-1968" (samizdat copy at http://falsedoor.com/doc/ascii_evolution-of-character-codes.pdf) and then chase its references (many of which are not available online and may be hard to find even with access to a university library, I regret to say).
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