<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[fxhover的专栏]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/fxhover</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; fxhover]]></copyright><item><title><![CDATA[《将博客搬至优快云》]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82880920</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82880920</guid><author>fxhover</author><pubDate>Tue, 25 Sep 2018 12:38:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[python常用的命令行解析库]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82735846</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82735846</guid><author>fxhover</author><pubDate>Mon, 17 Sep 2018 13:43:49 +0800</pubDate><description><![CDATA[1、argparse

argparse是python自带的模块，要经历解析器初始化、参数定义、解析一套流程，使用起来有些繁琐。

一篇argparse使用的文章：https://www.cnblogs.com/yymn/p/8056487.html

argpase的使用：


			
class Calculator(object):
    &quot;&quot;&quot;
    计算器
    &quot;&quot;&quot;

    ...]]></description><category></category></item><item><title><![CDATA[面试遇到的问题]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82826425</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82826425</guid><author>fxhover</author><pubDate>Sat, 22 Apr 2017 08:28:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[Mysql查询字段包含某个字符串的方法]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82808738</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82808738</guid><author>fxhover</author><pubDate>Tue, 18 Apr 2017 15:14:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[php namespace的使用介绍]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/103133514</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/103133514</guid><author>fxhover</author><pubDate>Sat, 18 Mar 2017 10:40:00 +0800</pubDate><description><![CDATA[##简介
对于命名空间，官方文档已经说得很详细http://www.php.net/manual/zh/language.namespaces.rationale.php，我在这里做了一下实践和总结。
命名空间一个最明确的目的就是解决重名问题，PHP中不允许两个函数或者类出现相同的名字，否则会...]]></description><category></category></item><item><title><![CDATA[php常量介绍]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82808749</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82808749</guid><author>fxhover</author><pubDate>Sat, 18 Mar 2017 09:58:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[Rails使用SQL语句查询]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82808757</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82808757</guid><author>fxhover</author><pubDate>Wed, 15 Mar 2017 21:03:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[记一次线上老系统Mysql慢查询优化]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/103134133</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/103134133</guid><author>fxhover</author><pubDate>Fri, 03 Mar 2017 17:00:00 +0800</pubDate><description><![CDATA[线上的老系统在高峰时期卡顿，有的时候甚至页面都打不开，通过监控发现是Mysql慢查询引起的，因此找到这些慢查询，来分别做优化。
1、第一条
mysql&gt; SELECT COUNT(*) FROM `questions`  WHERE `questions`.`status` = 1 AN...]]></description><category></category></item><item><title><![CDATA[Mysql中的锁]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/103133477</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/103133477</guid><author>fxhover</author><pubDate>Mon, 27 Feb 2017 21:09:00 +0800</pubDate><description><![CDATA[#Mysql中的锁：
Myisam和innodb都支持表锁，innodb支持行锁。
##表锁：
1、读锁
锁住之后，本会话和其他会话都可以读取，都不能够写入。
只有解锁之后才能写入。
lock table users read;
unlock tables;

2、写锁
锁住之后，本会话可以读...]]></description><category></category></item><item><title><![CDATA[Mysql主从同步配置]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82808745</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82808745</guid><author>fxhover</author><pubDate>Mon, 27 Feb 2017 20:57:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[Ruby线程同步实例]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/83748464</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/83748464</guid><author>fxhover</author><pubDate>Fri, 25 Nov 2016 15:14:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[ruby中委托方法]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/103133509</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/103133509</guid><author>fxhover</author><pubDate>Tue, 18 Oct 2016 21:33:00 +0800</pubDate><description><![CDATA[##委托实例方法
require 'forwardable'

class Person
  attr_accessor :name, :sex 

  def initialize(name, sex)
    @name, @sex = name, sex 
  end
end

clas...]]></description><category></category></item><item><title><![CDATA[go语言按行读取文件]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/83748459</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/83748459</guid><author>fxhover</author><pubDate>Sat, 24 Sep 2016 10:00:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[一个简单的goroutine pool]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82808744</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82808744</guid><author>fxhover</author><pubDate>Thu, 08 Sep 2016 17:35:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[使用rbenv管理ruby版本]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/83748456</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/83748456</guid><author>fxhover</author><pubDate>Fri, 13 Nov 2015 15:26:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[ruby中的urlencode和urldecode]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82808742</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82808742</guid><author>fxhover</author><pubDate>Mon, 26 Oct 2015 11:08:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[php过滤中文]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/83748453</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/83748453</guid><author>fxhover</author><pubDate>Tue, 11 Aug 2015 09:30:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[ruby中文转16进制和反转]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/83748452</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/83748452</guid><author>fxhover</author><pubDate>Mon, 08 Jun 2015 23:14:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[Mac配置vim，打造适用于开发的vim]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82808769</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82808769</guid><author>fxhover</author><pubDate>Tue, 19 May 2015 08:39:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item><item><title><![CDATA[php统计数组元素出现的次数]]></title><link>https://blog.youkuaiyun.com/fxhover/article/details/82808694</link><guid>https://blog.youkuaiyun.com/fxhover/article/details/82808694</guid><author>fxhover</author><pubDate>Tue, 31 Mar 2015 09:03:00 +0800</pubDate><description><![CDATA[
                                                    
                                                        开发十年，就只剩下这套Java开发体系了
&amp;gt;&amp;gt;&amp;gt;   
                                        
            ...]]></description><category></category></item></channel></rss>