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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

Article Title: more effective system management using the power of Ruby. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source. In addition to being used as a powerful Web application development platform, Ruby is rarely mentioned in combination with the Rails framework, which

Why is Ruby a shining pearl in developers' resumes? Over the past five years, the overall demand for Ruby on Rails skills has quadrupled. According to a survey by PayScale, an online compensation, benefits, and allowances company, Ruby has become an important tool to help developers move towards the peak of their lives. Compared with the previous five years, th

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

This is a research note, mainly to consult with you. In addition to the beginning, there is no extra nonsense, and no other customer experience is required. Please do not complain about poor readability. 1. Add a colon Before a name or string to get a symbol object. You can also use string # to_sym, fixnum # to_sym, and string # intern. 2. Generally, the key for hash using symbol is called to save memory and improve execution efficiency. 3. Why can I save memory? String in

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 blow everything out and then freeze. This is not Ruby, and freeze exists. The code I wrote today contains the following line:Strtmp = SD [0]. to_s.gsub! (/.../,

This article mainly introduces the use of circular statements in Ruby Tutorial, logic Loop statement is the basis of each programming language, need friends can refer to the Loops in Ruby are used to perform the same number of times as the code block specifies. This chapter details the looping statements that are supported by Ruby.

the same way, a car has four wheels, 200 horsepower, gas as a different tank and a capacity of 25 liters.A class is defined in Ruby: To implement object-oriented programming with Ruby, you need to first learn how to create objects and classes in Ruby. A class in Ruby always starts with the name of the keyword class

First of all, 2012 years, already have Ruby 1.9.3, why I want to install 1.9.2. Answer: Because I'm learning Ruby on Rails, the reference book Ruby on RAISL 3 tutorial is written according to 1.9.2, and Heroku server seems to support only Ruby 1.9.2 Start Ubuntu and install some related libraries with the following com

Output to: http://robbin.javaeye.com/blog/57474 There is almost no controversy in the MACOs platform, and textmate is used by everyone. However, there are many ides available for selection and use on the Windows platform, but each has its own strengths and weaknesses. Based on all the ruby ide I have used. Ror ide on Windows platforms is mainly divided into two categories: one is a heavyweight full-featured IDE, such as Eclipse, netbeans, ide

Why should O M engineers learn Python or Ruby? If you are a student, you should be C, C ++ and Java. There will also be some VB, or C #/. NET. You may have developed some Web pages. You know some HTML, CSS, and JavaScript knowledge. In general, it is difficult for us to find that some students are able to master languages beyond these languages. This is a pity, because there are many programming languages that can make you a better programmer. In th

Address: http://www.linuxidc.com/Linux/2010-12/30380.htm Ubuntu is updated with Ruby and rails, but not the latest version. The ruby version is about 1.9.1, but rails version is only 2.3.5, Which is outdated, so you have to download the latest version.Source codeCompile and install. 1. Prepare the library used for installation $ Sudo apt-Get install GCC g ++ build-essential libssl-dev li