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django 开发之自定义日志器
需求 在我们的真实环境中当我们出现错误的时候我们要记录下来,便于我们分析差错。 关于日志的代码文件 1 # 自定义日志输出信息 2 LOGGING = { 3 'version': 1, 4 'disable_existing_loggers': True, 5 'formatters': { 6 ...
分类:其他好文   时间:2016-08-23 20:28:04    阅读次数:404
elasticSearch indices VS type
https://www.elastic.co/blog/index-vs-type Who has never wondered whether new data should be put into a new type of an existing index, or into a new in ...
分类:其他好文   时间:2016-08-22 19:54:13    阅读次数:235
Liferay 6.2 改造系列之一:源码编译和服务启动
一、导入源码 源码可以从Liferay的官方网站上下载。http://www.liferay.com/downloads/liferay-portal/available-releases 下载后解压源码,可以使用Eclipse的File-->Import-->General-->Existing ...
分类:其他好文   时间:2016-08-19 19:08:45    阅读次数:96
适配器模式(Adapter pattern)
https://en.wikipedia.org/wiki/Adapter_pattern It allows the interface of an existing class to be used as another interface. It is often used to make e ...
分类:其他好文   时间:2016-08-06 08:34:37    阅读次数:182
mkdir常见参数使用演示
mkdir-makedirectoriesDESCRIPTION:CreatetheDIRECTORY(ies),iftheydonotalreadyexist.Mandatoryargumentstolongoptionsaremandatoryforshortoptionstoo.参数:-m,--mode=MODEsetfilemode(asinchmod),nota=rwx-umask设置文件模式(如chmod),而不是=rwx——umask-p,--parentsnoer..
分类:其他好文   时间:2016-08-05 21:41:07    阅读次数:2022
Django model :add a non-nullable field 'SKU' to product without a default; we can't do that
You are trying to add a non-nullable field 'SKU' to product without a default; we can't do that (the database needs something to populate existing row ...
分类:其他好文   时间:2016-08-05 00:56:15    阅读次数:554
HDU 5296 Annoying problem(LCA模板+树的dfs序心得)
Problem Description Coco has a tree, whose nodes are conveniently labeled by 1,2,…,n, which has n-1 edge,each edge has a weight. An existing set S is initially empty. Now there are two kinds of op...
分类:其他好文   时间:2016-07-25 01:53:01    阅读次数:316
WindowManager的分析
一、Window和WindowManagerWindow:表示一个窗口,从下面Window的源码中可以看出它有且只有一个实现类PhoneWindow。 The only existing implementation of this abstract class is * android.policy.PhoneWindow, which you should instantiat...
分类:Windows程序   时间:2016-07-22 01:19:38    阅读次数:389
CentOS 6.8 安装图解教程
CentOS6.8安装图解教程CentOS6.8安装图解教程1、安装CentOS6.8用光盘成功引导系统,会出现下面的界面这里选择第一项,安装或升级现有的系统,回车。界面说明:界面说明:Installorupgradeanexistingsystem安装或升级现有的系统installsystemwithbasicvideodriver安装过程中采用..
分类:其他好文   时间:2016-07-19 19:05:08    阅读次数:197
python 操作SQL SERVER数据库
首先安装pymssql模块pipinstallpymssql Collectingpymssql Downloadingpymssql-2.1.3-cp35-cp35m-win_amd64.whl(367kB) 100%|████████████████████████████████|368kB39kB/s Installingcollectedpackages:pymssql Foundexistinginstallation:..
分类:数据库   时间:2016-07-19 02:43:09    阅读次数:337
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