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Error executing nova-manage DB sync:2012-03-24 14:07:01 CRITICAL Nova [-] (Operationalerror) (1071, ' Specified key was too long; Max key length is $ bytes ' ) ' \ncreate TABLE user_project_association (\n\tcreated_at datetime, \n\tupdated_at

Common Data Mining & machine learning knowledge (points)Basis (Basic):MSE (meansquare error mean square), LMS (Least meansquare min-squared), LSM (Least square Methods least squares), MLE (Maximum Likelihoodestimation Maximum likelihood estimation),

Here's how to use the Ugui slider bar (slider)There are three game objects under the controlBackground-The backgroundFill area--foreground regionHandle Slide Area--Sliding barProperties of the sliderSeveral other settings are similar to other

Brief introductionThis blog is mainly to provide you with a unified skeleton animation solution, whether you used to cocos with the skeleton, or spine, or both, can be converted into dragonbones bones, and then added to the game to use.If your thing

Yesterday to finish a test, the first half of the last six months is busy, and I can safely leave Beijing to start a new journey, a little bit excited, and sometimes some melancholy, in short, the feeling is whole grains taste, just look forward to

Basic features of the operating system Concurrency: Multiple programs executed in the same period of time (note differences between concurrency and parallelism, which are multiple events at the same time, which are multiple events within a

http://blog.csdn.net/five3/article/details/9428655Selenium-grid How to workTags: selenium-grid2webdriverselenium22013-07-23 21:55 10815 People read Comments (2) favorite reports Classification:Selenium (+)Copyright NOTICE: This article for Bo

Many enterprises use EXCHANGE2007 or 2010 mail system, have done some mail flow strategy, such as: the sender of the outside of the organization incoming mail forwarded to someone in the organization or to whom the message needs to be approved by

Http://www.codeforces.com/gym/100827/attachmentsHill NumberTime limits:5000 MS Memory Limits: 200000 KB 64 -bit interger IO format:   %lld    java class name:   Span style= " box-sizing:border-box; display:inline; padding:0.2em 0.6em 0.3em;

Come back from Shanghai this two days after reading the semantic analysis, the previous paragraph is almost, originally prepared to see Code generation, people suddenly do not want to see, old habits and committed: a long time did not knock code,

Py2exe package python as an. exe filePackaging process and Results1. Create a setup script package file, which sets the properties and methods for packaging. Note: Try to place the packaged file in the same directory as this package script (because

I like to watch videos of the more famous Java lecturers because I don't have a professional Java study. Recently was watching Fanglixun teacher's video, but in the reflection of the time (class 12~16), found a bit of a problem.The teacher said in

First, originThe 802.1X protocol originates from the 802.11 protocol, the latter being the standard Wireless LAN protocol. The main purpose of the 802.1X protocol is to solve the problem of access authentication for LAN users, which has now been

Inadvertently looking over the code, found a difficult to understand the code. byte[] bs = digest.digest (Origin.getbytes (Charset.forname (CharsetName))); for (int i = 0; i BS is a byte array that is output after a string of

Hive is a framework that occupies and plays an important role in the ecosystem architecture of Hadoop, and it is used in many practical businesses, so that the popularity of Hadoop is largely due to the presence of hive. So what exactly is hive and

Course Objective: to help you learn faster and more efficientlySuitable for people: 0 basic and students who need advanced Learning Course Introduction:This set of teaching 34 hours comprehensive study of AE Foundation to advanced practical courses,

The following is a simple procedure for building a Git repository on a server.Installing the Git ProgramGit is distributed, that is, the program does not differentiate between the server and the client, and most of the official sources of Linux

In order to quickly synchronize data needs, I staged two Python scripts, that is, two process synchronization data opened, the results of the server reported the database deadlock exception, through the troubleshooting Code and database log

On the book of the Law of constructionOpen the "Law of construction", the first to see that the other readers of the book's reading of the comments, read these comments have aroused my curiosity, this book really have they say so good? Software

Summary of events and animations in jQuery, and summary of jquery events 1. Load DOM 1.1.window event Window. onload = function () {}...... timing: After loading all other resources, execute$ (Function (){})...... : Just wait until the tag is