I love Ruby and participate in the Ruby community where I am located. I am a member of the programming society RubyFools. Sometimes I give some lectures on Ruby's greatness and Ruby projects I have worked on in my spare time. I feel very free to use Ruby for programming. I love the vitality of the
Ruby handles strings like numbers. We enclose them in single quotes (' ... ') or double quotes ("...").
Ruby> "ABC"
"ABC"
Ruby> ' abc '
"ABC"
Single and double quotes have different effects in some cases. A string enclosed in double quotes allows characters to be drawn by a forward slash, and can be inline with #{} expressions.
Strings that are enclosed in s
Variable holds the location where the data for the program to be used is stored.
There are five types of variables supported by Ruby. A brief description and these variables have been experienced in the previous chapters. These five types of variables are described in this chapter.Global Variables for Ruby:
Global variables begin with $. The value of the uninitialized global variable is zero and a warning
Since The original tech preview release of FastCGI last year, we ' ve been seeing a lot of requests for getting Ruby on Rail s running with our FastCGI. Theoretically, since the FastCGI component uses a standard protocol to support fastcgi-enabled applications, this shouldnt Be a issue-but, in practice, this is very far from reality. After factoring in Setup problems, configuration, and variations on runtime Behavior/protocol deviations, every single
Basic Ruby tutorial,
1. Basic Ruby knowledge
1. Ruby
Ruby is a scripting language
Ruby is an object-oriented language
Ruby is a cross-platform language
Ruby is open source software.
2.
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 the name or string:
Create a symbol object
:foo:test
:”abc”:"I am a boy”
You may as
Several solutions to improve Ruby on Rails performance: rubyrails
Introduction
The Ruby On Rails framework has received wide attention since it was proposed. Under the guidance of ideas such as "do not repeat yourself" and "convention is better than configuration, rails brings high development efficiency to Web developers. The flexibility of ActiveRecord allows you to achieve easy-to-use persistence without
Ruby is a pure object-oriented language, and everything in Ruby comes in the form of objects. Every value in Ruby is an object, even the most primitive thing: strings, numbers, and even true and false are objects. The class itself is also an object and is an instance of class. This chapter will show you all the key features associated with
How to Improve Ruby On Rails Performance
1 Introduction to Introduction
It is always said that Rails is so slow that it has become a common issue in the Ruby and Rails communities. However, this statement is not true. As long as you use Rails correctly, it is not difficult to increase the running speed of your application by 10 times. So how can we optimize your application? Let's take a look at the followi
Author: published by tianen Beijing Aerospace Publishing House.
Ruby is a language with the word "Ruby ". Rails is a technical framework. Its word is "Rails ". The meaning of "Ruby on Rails" is that it is full of Ruby rails. Rails is a B/S structure programming framework based on the
This article details how to configure Ruby on Rails development environment in Windows, and hopefully it will help ror beginners.
First, download and install Ruby
The best choice to install Ruby under Windows is Rubyinstaller (one-click installation package).Download Address: http://rubyforge.org/frs/?group_id=167.We are here to download the newer Rubyinstaller
Ruby provides a complete set of implementation methods in the I/O-related kernel modules. All I/O methods come from the IO class.
Class IO provides all the basic methods, such as read, write, gets, puts, ReadLine, getc, and printf.
This chapter will cover all the basic I/O features that are available for use in Ruby. For more features, refer to Ruby's IO class.puts statement:
In the previous section, you
A summary of some basic syntax knowledge points in Ruby.
Let's write a simple ruby program. All Ruby source files will use the extension. rb. Therefore, put the following source code in a test. rb file.
#!/usr/bin/ruby -wputs "Hello, Ruby!";
Here, if you have installed the
Contributed by Brian Leonard, maintained by Gail ChappellDecember 2007[Revision number: V6.0-6]
In this tutorial, you use the ruby support in the netbeans ide To create and run a simple web application. the example shows how to create a ruby web log. you follow the basic workflow of creating the model, adding a controller, and creating a view.
Contents
-
Tutorial req
Ruby's philosophy is based on a basic element that makes programmers happy. Ruby is very focused on the happiness of programmers and offers a number of different ways to implement it. Its metaprogramming capabilities enable programmers to write code that is generated dynamically at run time. Its threading capabilities allow programmers to have an elegant way of writing multithreaded code. Its hook method allows programmers to extend the behavior of a
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 (born in Japan in 1993), Ruby
Let's write a simple ruby program. All Ruby source files will be in extension. RB. So, put the following source code in a test.rb file.
#!/usr/bin/ruby-w
puts "Hello, ruby!";
Here, suppose you have a Ruby interpreter installed, which can be found in the/usr/b
In addition to being used as a powerful Web application development platform, Ruby is rarely mentioned in combination with the Rails framework, which is a powerful scripting language, just like Python or Perl. It has very powerful functions. Because it can use a lot of built-in and external libraries, it can be used to solve many script writing requirements in the system management work environment. Furthermore, R
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.