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How do I check if there are duplicates in a flat list?
...lse:
d[i] = True
Leverage itertools (essentially an ifilter/izip/tee) on the sorted list, very efficient if you are getting all the dupes though not as quick to get just the first:
def getDupes(c):
a, b = itertools.tee(sorted(c))
next(b, None)
r = None
for k, g in iter...
How to install mongoDB on windows?
...y, it’s not an installation it’s just Downloading…
I. Download the zip file http://www.mongodb.org/downloads
II. Extract it and copy the files into your desired location.
III. Start the DB engine.
IV. Test the installation and use it.
That's it! So simple, right? Ok let’s start
1. Downl...
How do I determine the current operating system with Node.js
...indows, it returns win32 (even on 64 bit).
Current possible values are:
aix
darwin
freebsd
linux
openbsd
sunos
win32
I just set this at the top of my jakeFile:
var isWin = process.platform === "win32";
share
...
linux下iptables配置详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...
这样就可以写到/etc/sysconfig/iptables文件里了.写入后记得把防火墙重起一下,才能起作用.
[root@tp ~]# service iptables restart
现在IPTABLES配置表里什么配置都没有了,那我们开始我们的配置吧
(3)设定预设规则
[root@tp ~]# iptables -p INPUT ...
Installing older version of R package
...
You can download your appropriate version from the link below as a zip file.
http://cran.r-project.org/src/contrib/Archive/ggplot2/
In R Studio:
Tools >> Install packages >> Install from: (select drop down)
Package Archive File(.zip, .tar.gz).
Choose your newly-downloaded-pac...
理解Python的 with 语句 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...is what gets passed to sample.
这个例子中，with后面的get_sample()变成了Sample()。这没有任何关系，只要紧跟with后面的语句所返回的对象有__enter__()和__exit__()方法即可。此例中，Sample()的__enter__()方法返回新创建的Sample对象，并赋值给变...
Is it possible to install iOS 6 SDK on Xcode 5?
...and the same you can download from following link.
http://www.4shared.com/zip/NlPgsxz6/iPhoneOS61sdk.html
(www.4shared.com test account test@yopmail.com/test)
There are 2 ways to work with.
1) Unzip and paste this folder to /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/De...
n-grams in python, four, five, six grams?
... up your own function to do this using itertools:
from itertools import izip, islice, tee
s = 'spam and eggs'
N = 3
trigrams = izip(*(islice(seq, index, None) for index, seq in enumerate(tee(s, N))))
list(trigrams)
# [('s', 'p', 'a'), ('p', 'a', 'm'), ('a', 'm', ' '),
# ('m', ' ', 'a'), (' ', 'a',...
How to get “wc -l” to print just the number of lines without file name?
...
In AIX,ksh, this will always have a space preceeding the number. We have to use | awk '{print $1}' or a cut, to trim off the spaces. Another way to trim would be to enclose with an echo.
– rao
...
Floating View 扩展：悬浮视图扩展，将组件转换为悬浮窗口 · App Inventor 2 中文网
...
下载链接
扩展文件：
com.jdl.FloatingView.aix
示例文件：
FloatingView.aia
功能概述
扩展特性
悬浮窗口：将任意可见组件转换为悬浮视图
跨应用显示：在其他应用上层保持显...