Nova flavor
The flavor will be used for creating octavia service vm. We can create a new flavor or reuse an existing one.
Commands:
nova flavor-create --is-public False m1.amphora ${OCTAVIA_AMP_FLAVOR_ID} 1024 2 1
Option:
[controller_worker]
amp_flavor_id = ${OCTAVIA_AMP_FLAVOR_ID}
Nova keypair
If we want to log 继续阅读 »
Category Theory
A category has three components:
A collection of objects.
A collection of morphisms, each of which map one object to another.
A notion of composition of these morphisms, i.e. morphisms can be composed. If f: A -> B and g: B -> C are morphisms, f.g generates a new morphism A -> C.
Note that a morphism 继续阅读 »
基本上常用的项目有两种，一种是Java Project，另一种是Web Project，下面就以这两种项目为例，来阐释如何在项目中加载dll文件。
Java中调用dll的方式
System.load()
java
/**
*Loads the native library specified by the filename argument. The filename argument must be an absolute path name.
*/
public static void load(String filename)
//等价于
Runtime.getRuntime().load(name)
由JDK的说明文继续阅读 »
This blog was sent to openstack-discuss mailing list originaly.
As the official Victoria release is approaching and it has been a long time
silence for Trove in the upstream, I think it's good time for me as the Trove
PTL for the last 3 dev cycles to have a project update. The things that will be
described below have 继续阅读 »
最近要写技术文档，里面包含大量的数学公式，本来想用markdown，但是
markdown不适合提交到公司，于是想着还是用自己学过的Latex吧。
于是在网上去搜使用Latex写技术文档/技术书籍的模板，还真找到了一篇，即《用 LaTeX 排版技术书籍》。本来他提示使用tex studio编译，但我使用tex studio编译后可以运行，却不能导出pdf，总是提示：
```tex
** WARNING ** Obsolete four arguments of "endchar" will be used for Type 1 "seac" operator.
** ERROR ** This font using the "s继续阅读 »
今天突然想用markdown写博文，这样应该会方便不少。
开工
1.下载插件。
这里我选择了Markdown QuickTags
在官网看到
!This plugin hasn't been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.
有点被惊呆
2.启用插件
下载完该插件之后，放入WordPress的plugins文件夹下，上传代码，然后再后台启用即继续阅读 »
R rocks in both academia and industry nowadays. A rapidly increasing number of researchers choose R to be one of their productive tools for data analysis and data visualization. It is partially because the software is totally free and open-source but also because the community behind the stage who contributes to nearly继续阅读 »
1. Pythonic Thinking
1.1 know which version of python you're using
two major python version;
multiple popular runtimes for python: cpython, jython, ironpython, pypy, etc;
be sure that the command line for running python on your system is the version you want;
prefer python 3 in your next project;继续阅读 »