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Reprint, original link http://linux.cn/portal.php?mod=viewaid=170 using Ubuntu to build a Ruby on Rails Local development environment Want to develop a Ruby on Rails app? Although there are already some (beginner) Ruby on Rails tutorials, there seems to be some uncertainty about how to build a clean and updated local development environment.This tuto

Shortly before learning Ruby, I found that Ruby and Python were very much alike, so they were tested and compared, and they knew there was a ready-made online ... Here are the characteristics of the test results sequence (including lists and tuples, etc.) with sharding: It may be convenient to extract the specific elements, temporarily feel useless: note is used: separate two numbers. The minus sign indica

Both PHP and Ruby on Rails have a large number of their own loyal fans. Comparing the two is a difficult choice in itself. Whoever wins will attract the saliva of the other's fans. By this effect, developers often seem hesitant to choose between the two. Although the starting point of this article is a comparison, it is not a one-sided-style singing and singing, but a dialectical synthesis of contrast. No good or bad, suitable for their own is the bes

1, with java,c# and other languages of the Try...catch...finally...throw, Ruby Begin/end ... rescue...ensure ... raise to handle the exception, retry can be used in rescue. You can use either rescue or ensure, when both are used, rescue must be in front of ensure.2, $arr 3, the first letter of the class name should be capitalized, such as student, the method name and parameter name should start with a lowercase letter or begin with an underscore, such

1. Writing should be standardized, rather than creating different styles like C.Java is obviously a language that is easy to unify the programming style, while Ruby is obviously a language that is difficult to unify the programming style. Someone in the javaeye forum once said: Reference The Java language, the master and the Low-hand code are similar, while Ruby is different. The syntax of the Java program

Ruby, as an emerging language, has developed rapidly over the past few years with the help of the rails killer application. This articleArticleThis is my summary of Ruby over the past month. Of course, the main tone is for reference. Peter Cooper's five essentials for your ruby toolbox. To put it bluntly, let's start. Summary: Rubygems A good id

Ruby programming language is developed by the Japanese pine line, is a simple and fast object-oriented programming language, today mainly talk about the ruby framework--ruby on Rails (http://www.maiziedu.com/course/ruby/), Maybe some friends don't like Ruby, but as a languag

Loops in Ruby are used to execute the same code block several times. This section details all the looping statements that are supported by Ruby.Ruby While statementGrammar While conditional [does] code end When conditional is true, code is executed. The while loop is conditional by preserving the word do, a newline character, a backslash, or a semicolon; , to separate from the code.Instance #!/usr/bin/

Ruby on Rails is a framework that makes it easy for you to develop, deploy, and maintain Web applications. October 2015 programming language leaderboard Ruby entered the top 10 of the Tiobe leaderboard, which shows how popular it is. This article will help you open the door to Ruby on Rails web development and help you get to the world of

Global variables start with $.ProgramBefore initialization, the global variable has a special value nil. Special variables starting with $ and with a single character are listed here. for example, $ contains the process ID of the Ruby interpreter, which is read-only. here are the main system variables and their meanings (details can be found in the ruby reference manual ): $! Last error message $ @ Er

Ruby is a scripting language for simple and fast object -Oriented programming (object-oriented programming). Simple Introduction Ruby is open source and available on the web for free, but requires a license . Ruby is a universal, interpreted programming language . Ruby is a

Install and uninstall Ruby in Ubuntu In ubuntu12.04, run the following command to install Ruby 1.8 by default.1 $ sudoapt-Get installruby I. The following describes how to install ruby1.9.3 (in some versions of Linux, 1.8 must be installed first) Install curl first. If you have installed curl, you will be prompted that curl is already in the latest version.1 $ sudo apt-Get installcurl Next, install the

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

D Guadalcanal recently wanted to do a website, in addition, the old has learned a dynamic language idea, to meet the two conditions of the programming language, Ruby, Python is the most appropriate two languages. Now Ruby on Rails is in the ascendant, shine! So, you've chosen Ruby to start learning from scratch. The day before yesterday saw Ruby's iterator, for

Ruby provides a complete set of I/O-related methods that are implemented in the kernel (Kernel) module. All I/O methods derive from the IO class. Class IO provides all the underlying methods, such as read, write, gets, puts, ReadLine, getc, and printf. This section explains the basic I/O functions available in all Ruby. For more functions, check out Ruby's IO class.puts statement In the previous section,

Basic Learning Ruby--Basic Learning (i) Project folder description Ruby-Basic Learning (ii) foreign key configuration for cascading deletions Ruby-Basic Learning (c) Setting time in China timezone Ruby--Basic Learning (iv) Timedate processing Ruby-Ba

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

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