ITPub博客

用R读取PDF并进行数据挖掘，例子如下：# here is a pdf for miningurl <- "http://www.noisyroom.net/blog/RomneySpeech072912.pdf"dest <- tempfile(fileext = ".pdf")download.file(url, dest, mo...

之前发现Java 7中重要安全漏洞的波兰安全公司Security Explorations近日发表公告称，他们在Java中又发现了一个漏洞，攻击者可利用该漏洞绕过沙箱。 Security Explorations公司安全专家Adam Gowdiak称： 引用...

Revel is a Play-like web framework for Go. I’m new to the Go programming language but I’ve heard good things. So I thought I’d take Revel for a spin and get it working on Heroku. Luckily there ...

Typically you have your grails installed into some directory, created environment variable GRAILS_HOME and you are ready to go.But what if you have few projects with different grails versions? Y...

For a guaranteed surge of traffic and to hit the Hacker News homepage, all you need to do is write about why you hate MongoDB and/or migrated to some other database. We’ve been using it to power ...

I had the recent opportunity to present a talk at MongoDB Seattle on Schema Design at Scale. It's basically a short case study on what steps the MongoDB Monitoring Service (MMS) folks did to evolv...

I discovered today that Ruby treats underscores a little bit differently when it comes to variable names.Suppose, for the sake of argument, that we have a set of data that looks like this:CODE:p...

1. PyPy - fast, compliant alternative implementation of the Python languagePyPy is a fast, compliant alternative implementation of the Python language. It supports most of the commonly used Pyth...

For the "Lunch and Learn around Neo4j" with Andreas Kollegger we wanted to use a dataset that is easy to understand and interesting enough for attendees of the conference.So we chose to use just...

Groovy开发团队今天发布了Groovy 2.0.4版本。上一个版本为2.0.2，之所以跳过了2.0.3，是因为2.0.3错误地使用了JDK 6，而不是JDK 7，无法使用动态调用功能，因此开发团队又立刻发布了2.0.4版本。 该版本修复了...

You’re probably familiar with __LINE__ keyword in Ruby. Wherever it’s used, it refers to the line number in the current file. It says so right here in the Ruby docs.QUICK! What’s the output o...

Curator's Note: The following is by Michael Hunger.Thanks again everyone for attending the Intro to Spring Data Neo4j webinar. We hope you enjoyed the presentation and learned a lot. We answered...

Google App Engine开发团队今天发布了最新的1.7.2版本。 该版本包含了一些新功能和改进，修复了超过130处bug，其中包括： PyCrypto 2.6现在可以作为Python 2.7的第三方库。Java Threads现在完全支持Java运...

[i=s] 本帖最后由 jieforest 于 2012-9-22 21:35 编辑 雅虎今天正式发布了YUI 3.7.1。YUI（Yahoo User Interface），是由雅虎开发的一个开源的JavaScript函数库，它采用了AJAX、 DHTML和DOM等诸多技术。YUI...

[i=s] 本帖最后由 jieforest 于 2012-9-22 21:33 编辑 snailseg是一个使用Python编写的简单的中文分词库。 项目地址：https://github.com/fxsjy/snailseg 在线分词效果展示：https://snailsegdemo.appspot....

jQuery团队今天发布了jQuery 1.8.2版本。该版本主要修复之前两个版本中的一些bug和性能衰退问题，包括： Deferred：当typeof( target)=='object'时，Deferred.promise( target)才能正常工作Event：使用委托...

IntroductionIf you reached this page, it’s fair to assume that you must have worked on at least one relational database in your lifetime. They have been in use for a quarter of a century and ar...

http://griffon.codehaus.orgThe Griffon team is happy to announce Griffon 1.1.0, the latest release of the 1.x series.Griffon is an application framework for developing desktop applications in t...

I recently concluded a migration away from MongoDB to PostgreSQL for one of my apps - digiDoc. I’d like to tell you why I did so.To be honest, the decision to use MongoDb was an ill-thought out...

W3C日前提出了一个用于将Web加密API整合进浏览器的公共草案。该API提供的特性包括哈希、密钥生成和验证、加密和解密等。这将允许Web应用程序以更安全的方式检查用户身份。地址：http://www.w3.org/TR/2012/WD-W...