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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
Ruby is a scripting language for simple and fast object -Oriented programming (object-oriented programming).Brief introduction Ruby is open source and is available on the web for free, but requires a license . Ruby is a universal, interpreted programming language . Ruby is a true object-oriented programming lan
Ruby Global Variables Global variables begin with $. The value of an uninitialized global variable is nil, and a warning is generated when the-w option is used. Assigning a value to a global variable changes the global state, so it is not recommended to use global variables. The following example shows the use of global variables. #!/usr/bin/ruby $global _variable = ten class Class1 def print_
Understanding of the Block concept in Ruby: In this paper, we give a comparison between JavaScript code block and Ruby code block, the need of friends can refer to the following The block in Ruby is generally translated into blocks of code, which seems a bit strange at first because there is no such thing in many languages. Actually, it's not bad. First-class
This article mainly introduces the detailed interpretation of Ruby in terms of conditional judgment statements, if, else and other logical judgments are the basis of the programming language, the need for friends can refer to the Ruby offers a conditional structure, which is common in modern programming languages. Here, we'll explain all of Ruby's conditional statements and modifiers
This article mainly introduced Ruby commonly used file operation method, this article explained the new file, reads the file, deletes, renames the file, the directory operation and so on common file operation method, needs the friend may refer to under One, new file The code is as follows: F=file.new (File.join ("C:", "Test.txt"), "w+") F.puts ("I am Jack") F.puts ("Hello World") File mode "R": Read-only. Starts at beginning of file (default mo
A traditional program has a separate thread that executes the statement or instruction sequence that contains the program until the program terminates. A multithreaded program has multiple threads executing. Each thread is executed sequentially, but the multiple-core CPU machine thread may execute in parallel. For example, in the case of a single CPU machine, multiple threads are not actually executing in parallel, but rather simulating the execution of threads that intersect in parallel.
Ruby on Rails and J2EE: Can they coexist?Comparison of Two Web Application Frameworks Document options Send this page as an email
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
This article mainly introduces CGI Programming in Ruby, including creating Form forms and other basic content. if you need it, you can refer to Ruby as a general language, it is not just a language used in WEB development, but Ruby is the most common in WEB application and WEB tool development. With Ruby, you can not
How to configure the Ruby development environment in CentOS 7, centosruby This article will share with you a tutorial on how to configure the Ruby development environment in CentOS 7 for your reference. Here is a detailed introduction: Install Ruby 2.2 The Ruby version in the CentOS7 repository is 2.0, but if necessary
send message to object display We can send a message directly to the object: Ruby Code Copy Code code as follows: Class HelloWorld def say (name) Print "Hello,", name End End HW = Helloworld.new Hw.send (: Say, "world") We usually use Hw.say ("World"), but send can work on private methods. Not only so send can make the program more dynamic, let's take a look at an example: We have defined a class person, and we want
A local variable starts with a lowercase letter or an underscore (_). Local variables do not contain nil values like global and real variables before initialization. Ruby> $foo Nil Ruby> @foo Nil ruby> Foo ERR: (eval): 1:undefined local variable or method ' Foo ' for Main (Object) The first assignment of a local variable is done much like a declaration. If you
To install the ROR Debugger in netbeans, click "Debug main project" to install the ruby quick debugger. As a result, the installation fails... (In fact, it is installed using the gem install ruby-debug-y command.) I searched the internet and said that the other two gems must be installed before installation. The following is a reference to the late brother's article http://hlee.javaeye.com/blog/576237 Bytes
Some programming languages (such as C ++ and clos) provide multiple inheritance mechanisms: A class can inherit from multiple superclasses. For example, a house may inherit from a building class (together with the Office and hospital classes) and residence class (together with the apartment class ). Although multiple inheritance may become a powerful feature of a language, many object-oriented languages are not added to it because it increases the complexity and ambiguity of the language.
CentOS6.2 Install Rvm+ruby+rails (1) RVM The official website should be revised once,Using Java code Curl-l https://get.rvm.io | bash-s stable Download and install the RVM stable version. Not using Bash Soon after installing RVM, re-login to a new SSH, using RVM-V to check the version.(2) Install some libraries, compile and install other software or libraries will be used whenJava code Yum Install zlib zlib-devel sqlite-devel
http://www.aqee.net/why-every-programmer-should-learn-python-or-ruby/If you are a student, you should be c,c++ and Java. There will be some VB, or c#/.net. How much you may have developed some Web pages, you know some html,css and JavaScript knowledge. On the whole, it's hard to see how many students have the ability to master a language beyond the limits of these languages. That's a shame, because there are a number of programming languages that make
How to quickly and correctly install Ruby, Rails to run the environment For new entry-level developers, how to install Ruby, Ruby Gems and Rails running environments can be a problem, and this page focuses on how to quickly install a ruby development environment with a plausible path.The secondary installation method
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