prafulliu

function readOnly( t )
  local proxy = {}
	local mt = {
		__index = t,
		__newindex = function ( t, k, v )
			error("attempt to update a read-only table", 2)
		end
	}
	setmetatable(proxy, mt)
	return proxy

prafulliu

Set = {}

-- create a new set with the values of the
-- given list

local mt = {}


function Set.new(l)
  local set = {}

prafulliu

One-line Tree in Python

Using Python's built-in defaultdict we can easily define a tree data structure:

def tree(): return defaultdict(tree)

That's it!

prafulliu

出现fatal: remote origin already exists. git,可是我就是没有弄过，不知道怎么解决耗了挺久，在网页上看就是没看出来，把网页上的仓库删了还出这个错误，终于找到方法git remote rm origin

重新git remote add origin [email protected]:young001/personal_config.git

最后git push origin master

prafulliu

http://www.cnblogs.com/simonw/archive/2007/01/17/622032.html

http://blog.csdn.net/hong201/article/details/4153182

http://www.cnblogs.com/simonw/archive/2006/12/20/597986.html

prafulliu

http://spf13.com/post/ultimate-vim-config

prafulliu

http://hi.baidu.com/zhmsong/blog/item/7cb17eeaddca8adad539c977.html

:s/XXX/YYY/g
其中XXX是需要替换的字符串,YYY是替换后的字符串
以上这句只对当前行进行替换,如果需要进行全局替换,则要:
%s/XXX/YYY/g

如果需要对指定部分进行替换,可以用V进入visual模式,再进行
:s/XXX/YYY/g
或者可以指定行数对指定范围进行替换:

prafulliu

http://www.gammon.com.au/forum/?id=9908

http://blog.fuqcool.com/2011/04/17/algorithm-shuffle.html

http://en.wikipedia.org/wiki/Fisher-Yates_shuffle

prafulliu

http://linux.itwaka.com/administer/69448.html



sudo apt-get install libnss3-tools
        最终执行如下命令导入根证书：

certutil -d sql:$HOME/.pki/nssdb -A -t "C,," -n <证书别名> -i <证书文件>

prafulliu

sed -i "s/floating-point/fixed-point/g" `find . -name "*.xml"|xargs grep floating-point -rl`

http://www.blogjava.net/hispark/archive/2010/08/14/328851.html