Ruby

Class C @ const1 = 1 const2 = 2 @ var3 = 3 def self. m p @ const1, const2, @ var3; end def m2 P @ const1, const2, @ var3; C: M # OK # M # error: undefined local variable or method 'M' end endp C: const2; #2 # When the double colon (: :) method is

After Ubuntu is installed, it is time to configure the Ruby on Rails 2.3.5 development environment. First, ensure that your current Ubuntu can be connected to the Internet. Ruby1.8.7 installation:Run the following command on the terminal:Sudo

This is to setup a developement environment for Ruby 1.87 and rails 2.2.3 on Ubuntu 10.04 (LUCID ).[Sourcecode Language = "bash"]# Make sure Ubuntu is up to date$ Sudo apt-Get update$ Sudo apt-Get dist-Upgrade# Install Ruby$ Sudo apt-Get install

Begin # Start    Raise .. # Throw an exception  Rescue [exceptiontype = standardexception] # Capture exceptions of the specified type. The default value is standardexception. $! # Exception Information $ @ #

CodeBlock and iterator This section briefly introduces one of Ruby's features. What we will learn is code blocks: Some codes that can be associated with methods to call them together, just like the parameters of methods. This is an incredible

Ruby, as an emerging language, has developed rapidly over the past few years with the help of the rails killer application. This articleArticleThis is my summary of Ruby over the past month. Of course, the main tone is for reference. Peter

Ruby 1.9.3-P0 makes psych-the replacement for 1.8.7'sYamlLibrary, syck-the defaultYamlParser. Psych is a wrapper around und libyaml, so you're Going To Need it installed and configuredBeforeInstalling Ruby. If you install 1.9.3-P0 without libyaml,

Def say_goodnight (name) Result = "Good night. "+ name return resultenddef say_goodmorning (name) Result =" Good morning. # {name} "Return resultenddef say_goodafternoon (name) Result =" good afternoon. # {name} "endputs say_goodnight (" Jake ")

#! /Usr/bin/ENV rubyclass megagreeter attr_accessor: names # initialize this object def initialize (names = "world ") @ names = names end # Say hi def say_hi if @ names to everyone. nil? Puts "..." elsif @ names. respond_to? ("Each") # @ names is an

I feel that I will soon forget what I learned and will not leave anything. I read "seven weeks and seven languages" this time and record what I think is useful for future reference, this should be the beginning of the record. Ruby is an

I used to make this mistake when using perforce: I wrote a new file and forgot to add it to the perforce depot to submit it in a rush. Other people could not sync and compile it, affecting the team progress. A ruby script is written to check which

3. Ruby and soap Simple Object Access Protocol (SOAP) quickly becomes the standard protocol for Remote Procedure Call (RPC. (For more information about soap, see http://www.linuxmagazine.com/2001-10/soap_04.html and http://www.linuxmagazine.com/2002-

In Ruby, the following code obtains the absolute path of the current Script: eiztz5 [0 51testing Software Testing Network + r1oc, tlt Require 'pathname' puts pathname. New (_ file _). realpath N: ^ qsxd? /M0 51testing software testing network ugfb +

Phprpc + Ruby + Arduino = led turn-on (?) Well, I know this is a very boring sample. For phprpc and Arduino, Google Before reading this demo, please install the SerialPort mentioned in another article. With another gem KIT: phprpc In this example,

Five months ago, arvato systems found me saying: I need to lead an important project. You can use my favorite technologies. The team members (at least part) can be selected by me. By the way, they also told me that the results of this project

HOST: Chris DiBona (head of Google open-source website) and Leo Laporte (founder of twit website) Interview: Guido van rosum (founder of Python) LEO: Python lacks some local GUI Libraries, only TK or something. Do you think this is a problem?Guido:

1. Install the compiling environment gcc Install GCC online using Yum install 2. Install the ruby Development EnvironmentFirst download Linux Installation File: ruby-1.8.6-p111.tar.gzRun Tar-zxvf ruby-1.8.6-p111.tar.gz CD ruby-1.8.6-p111

Output Simple output example: Hello {{name}}Hello {{user.name}}Hello {{ 'tobi' }}Advanced output: Filters Advanced output: Filter Output the filter required for marking. A filter is a simple method. The first parameter is the filter input on the

1. ruby Installation Here, we will install ruby under win, which corresponds to the number of operating system digits on our computer. For example, if my computer is 64-bit, we will download Ruby 2.0.0-p353 (x64. Then the installation process is

The emergence of the Ruby language has changed the traditional coding method of programmers, so that programmers can have a very pleasant mood when writing code. Here we will introduce you to Ruby blocks, a flexible encoding method. Ruby Rmagick