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How to learn Ruby? What do you need to know before you learn Ruby? This is a lot of people want to learn the voice of Ruby friends, I do not give a specific answer, the following to tell you about a predecessor learning Ruby (http://www.maiziedu.com/course/ruby/) learning pr

Gems use proxies in two ways: Mode one: >>set http_proxy=http://ip_or_host:port >>gem Install The_package_name Mode two: >>gem list-p Http://user:passwd@ip_or_host:8080-r Install Ruby-debug-base19There are 2 different ways:Method One:download the. gem file first, then install the. gem file directly, which requires compilation, so you need to take the With-ruby-in

Explain the methods in Ruby and the Ruby Methods The Ruby method is very similar to the functions in other programming languages. The Ruby method is used to bind one or more repeated statements in a unit. The method name should start with a lowercase letter. If the name of a method starts with an uppercase letter,

Analysis of Ruby relay and message-related knowledge, analysis of ruby Inheritance allows you to create a class as the refinement and specialization of another class ). For example, in our automatic karaoke system, the concept of "Song" is encapsulated in the Song category. Then, as the market grows, we need to provide karaoke support. A karaoke song is no different from other songs (it just does not have a

Ruby syntax notes, ruby syntax Accept user input first_name = gets.chomp Uppercase letters first_name.capitalize! Uppercase letters first_name.upcase! Lower letters first_name.downcase! Multi-row output Print Note # I am a comment Variable acquisition #{first_name} Variable Global variable $ Class variable @@ Method variable @ Local variables are lowercase letters or _ If/else if a Class class

Basic instructions for using regular expressions in Ruby, ruby Regular Expressions Built-in support for regular expressions is usually limited to scripting languages such as Ruby, Perl, and awk. This is a shame: although regular expressions are mysterious, they are a powerful text processing tool. It is quite different to support it through built-in instead of li

A summary of variable learning in Ruby and a summary of Ruby variable learning Variables in Ruby are in several forms, including local variables, instance variables, class variables, and global variables. For Beginners, they are often easy to mix up, especially java-like, it is still a headache to understand. After careful identification and learning, we will sum

Annotations, variable declarations, Array Operations, and Ruby variables in the ruby tutorial I read an article "PHP basic tutorial" on "blog Park" two days ago and introduced PHP. D guago also wrote a "Ruby getting started tutorial" when learning Ruby ". It should be noted that this article is suitable for beginners w

Introduction: Ruby on Rails is just one aspect of making Ruby very powerful, just as EJB is part of the Java Enterprise platform. Andrew Glover reveals what Java developers can do with Ruby. Before I begin this article, I need to clarify a few things. First, it's not an article about Ruby on Rails. If you want to lear

To install Ruby, go to the ruby official website to download the Windows Installation Package of ruby1.56. After installing Ruby, open the DOS window and enter ruby-V to display it. Ruby 1.8.6 (patchlevel 0) [i386-mswin32] indicates that

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 provides all basic methods, such as read, write, gets, puts, readline, getc, and printf. This section describes all the b

Example of how to optimize Ruby code to speed up the program running, ruby speed This article mainly introduces how to increase ruby gem contracts. ruby speed by 10 times. Contracts. ruby is used in my project to add code contracts to Ru