Ruby

With the shell for Fur and ruby? Words can not say so, some small functions with Ruby is very convenient, such as the reversal of the string and add 1 function with Shell to write is more troublesome. str= "123456", we define a small way to reverse +

Ruby (a scripting language for object-oriented programming), a scripting language created for simple and fast object-oriented programming (object-oriented program design), was developed by the Japanese as (まつもとゆきひろ/yukihiro Matsumoto) in the 1990s.

The following installation steps can be installed under/usr/local/rbenv, and all users can share rbenv. #rbenv安装 (/usr/local/rbenv) #安装依赖, the root user is required Yum install-y git Yum Install-y readline-devel Yum install-y openssl-devel

In the process of reading no matter what the problem, welcome to communicate togetherEmail:[email protected]qq:1494713801First, how to define the associationThere are often associations between the two model, and in order to solve the complex

Ruby is a gentleman in computer language, if you want to use a word to describe, it must be elegant, there is such a rubyist, his motto is "Write elegant program, do an elegant person", he is from seven cattle small partner "mint" Co-founder and CTO

We are currently training our company on Ruby + cucumber (mainly testers). Our goal is to help people throughout the project master how to use Ruby + cucumber to compile testcase. there is no in-depth research on Ruby, but it is only necessary to

Recently, many people have emailed me all the vim packages. Download is provided below. You just need to download them. You don't have to send me any more emails. Of course, you are welcome to leave a message on my blog. Now vim-Ruby is installed.

  [Root @ localhost Ruby] # gem install passenger -- preError: Error installing PASSENGER:Passenger requires fastthread (> = 1.0.1, runtime) Solution: Download   Copy the file to the current directory and execute: Gem install fastthread-1.0

Global variable $ XX Object variable @ xx Local variable [A-Z] xx Constant [A-Z] xx Two pseudo variables self and nil:Self is actually a global variable pointing to the current object. The value of this variable is controlled by the

Write a simple example 1. Create the following folder Note: The lib directory must have a Rb file with the same name as your gem. [Ruby]View plaincopy $ CD Hola $ Tree . ├ ── Hola. gemspec ── Lib └ ── Hola. Rb 2. write code . Hola.

Chapter 2 Structure and running of Ruby programs The ruby annotation starts with # And ends until the end of the line. Ruby does not have/*... */C style annotations. If # appears in the string or regular expression literal, it is a part of a

Http://www.songlin51.com/archives/667.html Ubuntu 12.04 redmine2.1 installation record When you install gem install rails, you cannot connect to rails. Solution: Search for railson http://rubygems.org/gems/railsto download rails. gem for

Jira4r is a Ruby library used to operate the JIRA problem tracking system.Installation requirements (in Windows ):1. Ruby2. soap4r (gem install soap4r)3. jira4r (gem install jira4r) If the 'xml processor module not found 'error message appears

At this point, the implementation of this shopping cart is complete. Now we can use Rdoc in ruby to generate documents for our program, just like dotnet, java, and python, rdoc can extract the comments before class and method declaration in our code

If you want to write ruby code on your own and deploy it at any time, you can view it everywhere. The heroku domain name is unfriendly and slow in China, so I think of capistrano, so I started

Ruby: a simple example of Binary Search (Binary Search) algorithm. In computer science, binary search (English: binary search), also known as binary search (English: half-interval search), and log search (English: logarithmic search ), it is a

An example is provided to explain the regular expressions in Ruby and the regular expressions in ruby. A regular expression is a special character sequence that can help match or find other strings or strings. The pattern used maintains a special

I. String operations String Interpolation 1. # {}: Any valid Ruby Code placed in # {} will be evaluated and replaced with the evaluated result and inserted to the original location. 2. Differences between single quotes and double quotes: Double

Using MVC thinking to understand the design structure of the Ruby on Rails framework, rubyrails In rails, the process of sending a request (/users) is as follows:1). the browser sends a request (/users)2) Rails routes requests to the index method of

Tutorial on processing file input and output in Ruby, and tutorial on ruby processing output Ruby provides a complete set of I/O-related methods, which are implemented in the Kernel module. All I/O methods are derived from IO classes. Class IO