About Ruby on Rails Ruby on Rails is an application stack that provides developers with a framework to quickly create a variety of web applications. Ruby on Rails does take a little while to install on a virtual server, but luckily there are a lot of…

Ruby入门--Linux/Windows下的安装.代码开发及Rails实战 http://www.linuxidc.com/Linux/2014-04/100242.htm Ubuntu 13.04下Ruby的安装 http://www.linuxidc.com/Linux/2013-06/85734.htm 公司有项目组进行系统重构,采用了Ruby On Rails框架,我也抽出时间学习了一下,并对几个原来用Java开发的定时任务.消息监听进行了ruby改造,学习过程中主要参考两本书:<Pr…

Update: An updated version of these instructions for Ubuntu 12.10 (Quantal Quetzal) is available here. 1. Install the prerequisites sudo apt-get install openjdk-7-jdk libjpeg62 libwebkitgtk-1.0-0 git-core Although Aptana Studio doesn’t officially sup…

the rails philosophy includes two major guiding principles: Don't repeat yourself: DRY is a principle of software development which states that "Every piece of knowledge must have a single, unambiguous, authoritative representation within a system&qu…

Rails Concepts Series: https://gorails.com/series/rails-concepts 基本都是免费的 一些细小的知识点,很有帮助. URL和parameter 的简单解析 做一个app template 使用 Ruby on Rails 的❌页面debug rails5的actioncable和websockets介绍(有多个系列的cable视频) Form的submit方法解释:params[:commit] == value 记录关联中的选项:co…

http://blog.csdn.net/zhaoen95/article/details/51995520     现在: 使用 OS 系统, 正在学习iOS 需要配置cocoapods 命令行中显示: $ sudo gem install -n /usr/local/bin cocoapods ERROR:  Error installing cocoapods: activesupport requires Ruby version >= 2.2.2. 查看ruby版本后发现版本过低 $…

废话不多说. 准备工作: 1. 下载源代码: http://opencv.org/ 编译平台:ubuntu14.04 opencv 2.4.6.1 本人用这样的办法编译了opecv 2.4.9 的没有什么问题, 问题比opencv2.4.6.1还要少, 事实上他们的原理是一样的. opencv 源代码根文件夹----${opencv_home} 2. 改动 ${opencv_home}/platforms/scripts/cmake_android_arm.sh 文件,加入编译选项 -DBUIL…

After following many outdated and incomplete instructions for setting up a web development environment on a Mac (back in March 2012), and spending a lot of time finding solutions to the problems I encountered along the way, I decided to put together…

原帖:http://wp.xdite.net/?p=1754 ========= 學習 Ruby on Rails 最快的途徑無非是直接使用 Rails 撰寫產品.而這個過程中若有 mentor 指導以及 code review,學習進度也會加速不少. 但現實生活中並非如此理想, 第一,並不是每個人都有每天必須要以 Rails 撰寫產品的壓力(not a Rails Developer). 第二,沒有循序漸進的入門途徑以及沒有 mentor.(Framework 進展太快,導致現有書籍版本跟不上…

问题一:在win7系统64位环境下执行cmd命令:rails new testapp 之后,回报如下图错误:Gem:installer::ExtensionBuildError: ERROR:Failed to build gem native extension.…