Ruby

Arrays and Hash tables Ruby's arrays and hash tables are indexed collections. Both are saved objects collection and can be read by key. The key of the array is a number, but the hash table supports the object as a key. They all grow with the

This article mainly introduces the simple introduction of socket programming in Ruby, is the basic knowledge of Ruby network programming learning, need friends can refer to the Ruby provides two access-level network services. At a lower level, you

GEM-related commands use 1. Show help and version of Gem Copy Code code as follows: Gem–h/--help #显示gem的帮助 Gem–v/--version#显示gem的版本号 2. List all available software for the remote library Copy Code code as follows:

In the rule engine, Ruby's closures are particularly frequent, and there are several forms of usage, such as block,proc and lambda, that are confusing. In order to get a deeper understanding of the code, and again carefully learn Ruby's closure,

In Ruby, the execution of shell commands is not surprising, and Ruby offers about 6 ways for developers to implement them. These methods are simple, and this article will describe how to invoke a terminal command in a Ruby script. Exec exec

Use Instantrails to quickly build ruby on rails development environment There's been a lot of interest in Ruby on Rails to see what's been praised by many people, but the development that has been done under Windows is a headache for Ruby on

Introduction to Ruby and Rails Ruby is an object-oriented, dynamic scripting language. Its syntax is flexible and provides a rich library of classes. Therefore, the efficiency of writing programs in Ruby is very high. Although Ruby was very early (

For Mac occasions:Which Ruby-"/usr/bin/ruby-" This is the Ruby that comes with Mac, and we want to be able to manage the Ruby version.Installing RVMCurl-l https://~/.profileCheck install ruby conditionRVM RequirementsStatus 1 is wrong." $ (curl-fssl

Development machine: Win7 flagship-64-bit1, install ruby, download Rubyinstaller-2.0.0-p451.exe: http://rubyinstaller.org/downloads/1.1 Select the installation directory: (for example: D:\Ruby200)1.2 During installation: All options need to be

In Ruby, the followingCodeYou can obtain the absolute path of the current script: Require 'pathname' puts pathname. New (_ file _). realpath Save the above Code in test1.rb and put it in the root directory of drive D. During the test, we enter

In Ruby, you can call constructor to create an object. Song1 = song. New ("Ruby ") Ruby rarely processes single quotes. Except for a few exceptions, the literal content entered into the string constitutes the value of this string. Ruby handles

Ruby string forzen and unfreeze problem string processing is the first problem question to learn a new language   When we look at the return of super people, remember there's a superman named freeze in it? This guy has a trick, drink water, and then

1. Install Ruby, rails, mongrel, and apache2.2 download one-click Ruby install from the rubyforge website and run the installation program. Then Ruby and rubygems are installed. Run the command: Gem install rails-ygem install mongrel-ygem install

I was eager to learn something new. I heard that ROR is very efficient in development, so I chose Ruby on Rails. It was really difficult to install it, here I will write down my installation experience: 1) install Ruby Download installation

Reference: http://rubyer.me/blog/485 Http://sunnyshuhai.iteye.com/blog/286970 In Ruby, global variables, instance variables, class variables, and symbol are often very different from other languages such as Java and are easy to mix up.First, there

What is Symbol? Ruby is a powerful object-oriented scripting language (the ruby version used in this article is 1.8.6). In Ruby, symbol represents a "name", such as a string name and an identifier name. To create a symbol object, add a colon Before

Understand Ruby scopes and Ruby scopes   What is scope? When talking about the scope, you should immediately thinkVariableAndVisibilityThese two words,VariableAndVisibilityIt is the main content of the scope. Yes, the scope is about where the code

Example parsing: Implementation of observer mode in Ruby design mode development, and ruby Design Mode In general, the observer mode should be defined as follows: building a clean interface between the source of news that some object has changed and

Summary of loop statements in ruby and summary of ruby loop statements While (when ...) Loop 　 　 While Condition Statement 1; Statement 2; statement... End Single Row while LOOP (Statement 1; Statement 2;

Html forms, div labels, etc...., div ...... I. Forms Function:The form is used to transmit data to the server to realize interaction between the user and the Web server. A form can contain input series tags, such as text fields, check boxes, single