Ruby

I went to bed at half past five last night and went crazy about configuring the vim environment. Finally, I finally completed the fantastic Ruby on Rails development tool. I have installed vim-Ruby in this Vim environment. Of course, you need to

Python and Ruby are currently very popular.Programming Language. They are ideal for building software prototypes. These two languages are also suitable for developing web applications.Program. The latest Ruby version is 1.9.2, and the latest Python

First, in ruby1.8, class variables are shared by all sub-classes and parent classes.Code: Class intelligentlife @ home_planet = nil def self. home_planet @ home_planet end def self. home_planet = (x) @ home_planet = x end #... end class TerranWe

My environment is Ruby 1.9.2p290 + rails2.3.4 + mysql5.5.15. When I run "DB: migrate", the error message is as follows:!!! The bundled mysql. RB driver has been removed from rails 2.2. Please install the MySQL gem and try again: Gem install

The ruby unless expression runs only when the condition is false.CodeBut it does not understand the logic combination with the condition "& |". Whether it is false or false to run the unless code block, or false | false to continue running. In fact,

# Close command display @ echo off # message ECHO now, listing the controller, please not shutdown the DOS file! # Switch to the current path. Put the. BAT file and the. RB file together. set Pa = % Cd % # execute the ruby script Ruby test. rbpause

IRB (main): 022: 0*1. next => 2irb (main): 023: 0> "". next => "B" IRB (main): 024: 0> "1 ". next => "2" IRB (main): 025: 0> Performance Comparison: Require 'benchmark' n = (1 .. 1000000). to_adef num_next (first, last) while first! = Last first =

Class fixnum attr_accessor: valueendx = 1 p x. object_idx.value = "anleb" P x. value. object_iddef change (x) P x. object_id p x. value. object_id x = 2 # pointer change X. value = "mr. W "P x. object_id p x. value. object_id # x pointer changed

Reference books: Agile web development with rails 4th Edition Create a new website and create some default directories and files: $ Rails new Start the server and run the following command in the project directory: $ Rails Server Default

1. Create a folder Dir. New % 1Dir: mkdir # When the full directory name is not specified, the default value is the working directory.Dir: chdir () change the working directory of the current scriptFileutils. mkdir 'test'File = file. New ("cmd.txt ")

When I first came into contact with inject, I didn't know much about it. I just saw this article.ArticleRuby-inject, To get a new understanding, the article with a large number of examples to illustrate.1. Let's look at the simplest example of

From: http://hi.baidu.com/waytofall/blog/item/dad928f9d042b65f242df222.html Introduction to the MVC Architecture in Ruby on Rails   MVC was first proposed by Trygve reenskaug (seemingly a Norwegian, Professor at the University of Oslo,

Ruby Introduction Ruby was written in and released in 95. It is an object-oriented programming scripting language.ProgramMember. Despite the recent surge in the suppression of Japanese goods, here I would like to cite Mr. Song benhong's insight

1. First read the object_id of the string. Str1 = "anleb" str2 = "anleb" puts str1.object _ idputs str2.object _ id Output:2295250022952490 Different IDs indicate that objects have the same values, but they are different. What is different,

Class A def self. ask1 puts "the method of Class" End def ask2 puts "the method of instance" endend # Method of the Instance Object of the class. The method belongs to the new instance object generated by the class.P a. Methods. LengthP a. Class.

ArticleDirectory Ruby-adding a directory to $ load_path-what does it do? Similarities: all three are defined in the kernel and contain the meaning of something. Differences: 1. requre and load are used for files ending with. RB.

Today, the original stable mood was touched by some things, and the feeling of deep-buried things being pulled up is always painful, not to mention too much, or concentrate on WritingArticleRight. Let's talk about the keywords in this article and

After eight days of returning home during the Spring Festival, I spent almost all of my time drinking, drinking, and having fun with my family, friends, and friends. When I returned to Beijing, I gave me some ruby-related news and paid more

Since rails was booming, the Ruby community has grown a lot better than before (younger brother, I also learned Ruby because of rails, various Ruby extension libraries have sprung up. Their features are that their versions are low (rarely 1.0) and

This chapter includes: · Creating and Manipulating Threads · Synchronizing Threads · Summary He draweth out the thread of his verbosity finer than the staple of his argument. William Shakespeare, Love's Labours Lost, act 5, scene 1 Threads are