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0. Reply content: First, let's talk about your point of view: you must first understand what the goals of these script languages are, and the answers to different goals are different. Let's talk about my personal experience (perl ruby python) for your reference: 0.) at school, I learned about perl ruby and python. Perl is a bunch of weeds, and the impression is like a village girl on a construction site (n

Brief introduction Twitter is now the leader in social networking. Twitter only allows users to post no more than 140 characters, and who would have guessed that the previously insignificant small web site is now worth more than 1 billion of billions of dollars, has millions of users, has built a lot of apps on Twitter, and that new developers are ready to invest in the wave. This article does not intend to introduce Twitter (in fact, it is not necessary). Instead, this article describes how t

Explore some methods to optimize Ruby on Rails performance, rubyrails 1. There are two reasons for slowing down your Rails application: Ruby and Rails should not be used as the preferred choice. (I used Ruby and Rails to do something I was not good) Excessive memory consumption leads to a large amount of time for garbage collection. Rails is a pleasant fram

Ruby is not very popular, so it is difficult to draw conclusions at present. However, from the perspective of recruitment, there are still a few companies using Ruby. From the perspective of salary, Ruby is quite high compared with others, the main reason may be that there are fewer students. programming languages are universal. It is not a bad thing to learn a l

How to learn ruby from 0 on Rails (stroll) Ruby is a programming language, and Ruby on Rails is a web framework for Ruby, referred to as rails. There are a lot of people who are interested in Rails, but don't know where to start and what to learn, because they have answered similar questions on multiple occasions, so t

The production and Running Environments recommended by Ruby on Rails are Linux/FreeBSD/Unix, that is, UNIX operating systems. They use Lighttpd + fcgi solutions. I will take the Linux operating system, Lighttpd + fcgi, MySQL database as an example, from Source code Compilation and installation start. Before installation, ensure that the GCC compiler has been installed in the Linux operating system. Otherwise, use the Linux installation CD to install

In the Ruby language, the object is the basic unit, and all of the elements can be said to be objects. As previously understood for object-oriented programs, an object is a set of programs that contains a collection of specific properties and methods. An object is defined by a class and behaves as an object instance. That is, the object is an instantiation of the class [2].Basic elements of the Ruby languag

/ Proxypreservehost on Mycluster defines each mongrel application server node in the cluster. Proxypass/images! Requests starting with this URL are not forwarded to the mongrel cluster, but are processed by Apache itself. Restart Apache, open a browser to access www.xxx.com, and check whether the configuration is correct. So far, a Ruby on Rails production environment with good stability and performanc

A loadrunner was developed a few days ago to use tesseract-ocr to identify the verification code. Although the recognition accuracy is not too high, some verification code images cannot be recognized, however, the correct verification code can also be obtained through the loop method. This method is not recommended in performance testing because of high concurrency pressure. However, I am 100% in favor of functional automation testing. Functional auto

Php Chinese network (www.php.cn) provides the most comprehensive basic tutorial on programming technology, introducing HTML, CSS, Javascript, Python, Java, Ruby, C, PHP, basic knowledge of MySQL and other programming languages. At the same time, this site also provides a large number of online instances, through which you can better learn programming... Reply content: Let's talk about your point of view: you must first understand what the goals of the

Introduction: This article describes how to use the Eclipse plug-in Ruby Development Tools (RDT), a plug-in that enables eclipse to become a first-class Ruby development environment. Ruby developers who want to leverage the rich infrastructure of the Eclipse community to support development will benefit from this article, as will the Java developers interested in

Build RubyMine + Ruby On Rails + MySQL development environment in Windows I recently took over a mobile phone project. Some problems have been encountered during the environment setup process. We have recorded the problems in the following article and offered our solutions. Development Environment: Windows 2003; JetBrains RubyMine6.3.3 1. download the latest version of ruby(rubyinstaller-2.0.0-p598.exe, the

Ruby + Apache + MySQL for Linux Ruby is a very interesting open-source scripting language that supports Windows/Linux and other platforms. It can be used to develop games, network applications, and system management,CGI program, etc. It is concise, elegant, and highly efficient to execute, and now there are many mature frameworks to support it. However, it is currently not widely used in China. If you are i

Ruby pioneers talk about the shortcomings of this programming language Ruby creators song benzihong and Rails creator David Heinemeier Hansson make frank comments on the language. As a dynamic language originally released in 1995, Ruby was widely praised for its convenience advantage and often appeared on the popular language selection list. However,

How to optimize ActiveRecord in Ruby on Rails: railsactiverecord Ruby on Rails programming often spoil you. This evolving framework frees you from the boring experience of other frameworks. You can express your intent with just a few lines of code snippets that you are familiar. ActiveRecord can also be used. For an old Java like me? For programmers, ActiveRecord is somewhat unfamiliar. Through the Java fra

In this article, I read "Creating a Ruby on Rails Development Environment on Mac OS X" and sorted it out following his steps. The content is basically the same, and some images are added. If you want to see the original content, please refer to the blog of the repair team here. To install Ruby on Rails on Mac, you must first install mamp, which is a package of A

Basic Rails Applications Now let's start with a basic rails application. For a better presentation, I use Ruby 2.2.0 and Rails 4.1.1 Run at Terminal: $ RVM Use 2.2.0 $ rails New CD Docker-test To create a basic controller: $ rails G Controller Welcome index ..., and then edit routes.rb so that the root of the project points to our newly created Welcome#index method: Root ' Welcome#index ' Run Ra

changingthepresent.Caching Static Content Mongrel is a WEB server that is written by Zed Shaw using 2500 lines of Ruby and C. This small server consumes very little memory and is ideal for Ruby Web applications such as Rails, Nitro, Iowa, and so on. Mongrel can run on UNIX? and Linux? , you can also run on the Win32. Mongrel can also often run as an agent on the back end of another WEB server (such as Apa

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_