book of ruby

Deploy the Ruby server and ruby# Create a project directory/Opt/logs/TV-cibn-cms# Install rbenv and ruby 1.9.3 IN ruby# Install and compile related packagesYum install-y gcc openssl-devel libyaml-devel readline-devel zlib-develSu-ruby #/home/

When learning a new programming language, we must be clear about a few questions:What is the type model of the language?Strongly typed / weakly typed, static type / dynamic typeThe type model changes the way the problem is handled and controls how the language runsWhat is the programming paradigm of language?Object-oriented, functional, procedural, etc.How to interact with the language?Compiling, interpretingWhat is the judgment structure of language (decision construct) and the core data struct

Ruby's installation can go to Ruby's official web site to download the Ruby1.56 Windows Installer package, install the after installation, open the DOS window, input ruby-v display Ruby 1.8.6 (2007-03-13 patchlevel 0) [I386-mswin32] shows that Ruby has been installed successfully and the version number is Ruby 1.96.

Ruby Learning tips for building a ruby environment under Linux1. Preface2.Linux Installing the ruby EnvironmentFirst, prefaceThis blog post records the construction of the Ruby programming environment under Linux.This article is based on the following articles:Http://www.cnblogs.com/xfiver/archive/2012/03/08/2385833.ht

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,

The founder of Ruby talked about the ruby blocks and closure structure at on. I want to repost on Qiu Haifeng's translation network (0) font size: T | T This conversation is translated from the third part of the interview with Matz on the artima.com website to help you understand the blocks and closure structures in ruby. AD: This interview is an interview with

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

Project Address: Ruby-prof In the previous Profiling tool in Ruby, we listed several of the most commonly used profilers, but just a brief introduction, this time detailing how ruby-prof is used. Ruby-prof is a powerful, support CPU, memory use, object allocation and so on performance analysis, and provides a lot of fr

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

Introduction to file operations in Ruby and file operations in ruby Ruby provides a complete set of I/O-related kernel modules. All I/O methods come from IO classes. Class IO provides all the basic methods, such as read, write, gets, puts, readline, getc, and printf. This chapter covers all basic I/O functions available in Ru