<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[slothful的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/slothful</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; slothful]]></copyright><item><title><![CDATA[[转载]使用codecs模块，在Python中完成字符编码]]></title><link>https://blog.youkuaiyun.com/slothful/article/details/83366767</link><guid>https://blog.youkuaiyun.com/slothful/article/details/83366767</guid><author>slothful</author><pubDate>Sat, 28 Mar 2009 00:28:24 +0800</pubDate><description><![CDATA[



字符的编码是按照某种规则在单字节字符和多字节字符之间进行转换的某种方法。从单字节到多字节叫做decoding，从多字节到单字节叫做encoding。在这些规则中经常用到的无非是UTF-8和GB2312两种。

 

在Python中，codecs模块提供了实现这些规则的方法，通过模块公开的方法我们能够方便地获取某种编码方式的Encoder和
Decoder工厂函数(Factory
func...]]></description><category></category></item><item><title><![CDATA[linux下编译并配置quantlib]]></title><link>https://blog.youkuaiyun.com/slothful/article/details/83281992</link><guid>https://blog.youkuaiyun.com/slothful/article/details/83281992</guid><author>slothful</author><pubDate>Wed, 27 Aug 2008 21:50:41 +0800</pubDate><description><![CDATA[quantlib是一个C++编写的免费，开源的数量金融库。
在sourceforge（http://sourceforge.net/project/showfiles.php?group_id=12740）上下载软件包QuantLib，目前的版本是0.9.6
 
下面开始安装
quantlib需要boost的支持，大多数inux发行版已经预先安装了boost，就不用劳神了
$  tar  zxvf...]]></description><category></category></item><item><title><![CDATA[is not in the sudoers file 解决]]></title><link>https://blog.youkuaiyun.com/slothful/article/details/83281919</link><guid>https://blog.youkuaiyun.com/slothful/article/details/83281919</guid><author>slothful</author><pubDate>Wed, 27 Aug 2008 17:02:40 +0800</pubDate><description><![CDATA[今天准备安装Numpy ，下载软件包，解压，然后照猫画虎的键入sudo python setup.py install
并输入root密码后失败，终端显示muyixiang is not in the sudoers file
满世界求解，在sco unix论坛找到可行方案，记录如下：
首需要切换到root身份
$su -
(注意有- ，这和su是不同的，在用命令&quot;su&quot;的时候只是切换到root，...]]></description><category></category></item><item><title><![CDATA[如何设置MinGW的环境变量]]></title><link>https://blog.youkuaiyun.com/slothful/article/details/83281895</link><guid>https://blog.youkuaiyun.com/slothful/article/details/83281895</guid><author>slothful</author><pubDate>Wed, 27 Aug 2008 15:44:48 +0800</pubDate><description><![CDATA[PATH     D:\MinGW\bin; (千万别直接覆盖PATH变量，务必将其放在最前面，要用分号隔开)

LIBRARY_PATH      D:\MinGW\lib

C_INCLUDEDE_PATH      D:\MinGW\include

CPLUS_INCLUDE_PATH      D:\MinGW \include\c++\3.4.5;D:\MinGW\include\c+...]]></description><category></category></item><item><title><![CDATA[[转载]SAS程序员必备的十大技巧]]></title><link>https://blog.youkuaiyun.com/slothful/article/details/83281654</link><guid>https://blog.youkuaiyun.com/slothful/article/details/83281654</guid><author>slothful</author><pubDate>Tue, 26 Aug 2008 15:11:51 +0800</pubDate><description><![CDATA[SUGI27(2002)有一篇被广泛引用的文章，就两页纸，Doug Zirbel的10 Things Experienced SAS® Programmers Don’t Know – But Should[size=medium](“SAS程序员不知道但必须知道的10件事”)，题目挺拉风，讲的是对有经验的SAS程序员的一次非正式调查，要他们列出SAS程序员需要的一些技巧。其实一共列出了22条，当...]]></description><category></category></item><item><title><![CDATA[一个全排列算法]]></title><link>https://blog.youkuaiyun.com/slothful/article/details/83281545</link><guid>https://blog.youkuaiyun.com/slothful/article/details/83281545</guid><author>slothful</author><pubDate>Tue, 26 Aug 2008 09:27:13 +0800</pubDate><description><![CDATA[#!/usr/bin/env python

&quot;&quot;&quot;递归全排列算法&quot;&quot;&quot;

import copy 

def permutate(aList):
	&quot;&quot;&quot;生成输入序列的全排列

	输入列表，以列表的形式返回列表中元素的所有可能排列序列&quot;&quot;&quot;

	result = []
	# 如果输入序列为空或仅有一个元素
	# 它的全排列就是它本身
	if len(aList) &amp;lt;= 1:]]></description><category></category></item><item><title><![CDATA[itrade]]></title><link>https://blog.youkuaiyun.com/slothful/article/details/83281489</link><guid>https://blog.youkuaiyun.com/slothful/article/details/83281489</guid><author>slothful</author><pubDate>Mon, 25 Aug 2008 22:31:14 +0800</pubDate><description><![CDATA[在sourceforge发现一个不错的股票交易软件，是用Python开发的。目前一边学python一边准备明年6月的cfa考试，呵呵，本科学的那点金融知识全都交回去了，看英文原版教材犹如天书一般，真是痛苦。关键还是学以致用，自己对炒股没什么兴趣，（没有股本吧。。。）那就好好研究一下itrade的quote,portofolio和technical analysis模块吧。
http://itrad...]]></description><category></category></item><item><title><![CDATA[SAS习题集from online tutor]]></title><link>https://blog.youkuaiyun.com/slothful/article/details/83267059</link><guid>https://blog.youkuaiyun.com/slothful/article/details/83267059</guid><author>slothful</author><pubDate>Thu, 21 Aug 2008 13:29:03 +0800</pubDate><description><![CDATA[   以下是从online tutor里选出的基础习题。虽然有一定的迷惑性，但是应该没有真题难。
[size=medium] 
1. Which of the following would you use to compare the result of investing $4,000 a year for five years in three different banks that ...]]></description><category></category></item></channel></rss>