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常用Linux命令详解(持续更新) - 更多技术 - 清泛网 - 专注C/C++及内核技术
... tcpdump 命令
使用 tcpdump 命令可以获取到Liunx平台经过的数据包并保存下来,方便对Linux平台收发数据进行分析。下面用一个最简单的例子进行基本命令分析。
tcpdump -i eth0 -w 111.cap -s 0
-i<网络界面> 获取指定网口收发的数据包
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C++使用OLE/COM高速读写EXCEL的源码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...XCEL的源码VC对Excel表格的操作的方法有多种,如:通过ODBC数据库实现,通过解析Excel表格文件,通过OLE COM的实现。本文主要研究通过OLE COM实现对Excel表格的操作。另外,本文主代码中汇聚各网友的智慧进行了优化(比如预加载等...
iPhone App 开发第一步:从零到真机调试HelloWorld - 更多技术 - 清泛网 - ...
...一种方式了,如果条件允许,请勿搞些折腾,费时费力。此后真机调试用的是自己的iPhone 4s,系统5.0已越狱,非越狱机器且无IDP账号怎么调试,我未进行试验。以后肯定会登陆App Stroe,到时候再说。
下面开始说重点,主要是以...
Removing fields from struct or hiding them in JSON Response
...his rule/trick all the time with the built-in marshalers (and even built a CSV reader/writer based off of this rule as well! - I may open-source that soon as yet another csv go package). The OP could then simply not set the *Country value to nil, and it would be omitted. And awesome that you suppl...
MVC演化史 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...区分,历史上习惯的称之为Classic MVC。
Model:封装领域数据及逻辑
View:查询领域数据并展现给用户
Conctroller:截获用户请求并改变领域数据
注意:从依赖关系看,Model不依赖View和Controller,而View和Controller依赖Model。
Classic...
How to get a complete list of ticker symbols from Yahoo Finance? [closed]
...g with the given letter as a js array literal. you can also get nice tidy csv files from nasdaq.com here:
http://www.nasdaq.com/screening/companies-by-name.aspx?letter=0&exchange=nasdaq&render=download (replace exchange=nasdaq with exchange=nyse for nyse symbols).
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What is JSON and why would I use it?
...Thanks mson)
Using JSON with Yahoo! Web Services (Thanks gljivar)
JSON to CSV Converter
Alternative JSON to CSV Converter
JSON Lint (JSON validator)
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windbg 备忘 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...点编号。br OldID NewID
9.调试命令之内存读写
d* 读取内存数据
da 显示Ascii码
db 显示字节和ascii码
dc 显示双字(4个字节)和Ascii码
dd 显示双字
dD 显示双精度浮点数
df 显示单精度浮点数
du 显示unicode
dw 显示一个字
e* 向内存写入...
Python Pandas merge only certain columns
...umns,
and only t1_a, id, t2_a are required in the final table, then
mergedCSV = table_1[['t1_a','id']].merge(table_2[['t2_a','id']], on = 'id',how = 'left')
# save resulting output file
mergedCSV.to_csv('output.csv',index = False)
...
What does 'wb' mean in this code, using Python?
...n writing text files (whether using plain text or a text-based format like CSV), while binary mode must be used when writing non-text files like images.
References:
https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files
https://docs.python.org/3/library/functions.html#open
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