Ruby

About hashingLet's take a look at the basic idea of hashing:To set the number of objects to be stored in NUM, then we use Len Memory units to store them (len>=num); With the keyword of each object ki as the independent variable, a function h (KI) is

There are several forms of variables in Ruby, respectively, local variables, instance variables, class variables, global variables, for beginners, often easy to mix, especially as I do Java, understanding or headache, after careful identification of

This is the second part, the main is the MySQL database distributed design. When I set up the environment, I basically did not separate the database. For the time being, prepare for it. Database design of master-slave structure The www.eol.org

Write software often need to use the Print log function, can help you debug and positioning problems, the project on the line can also help you analyze the data, but Ruby native with the puts method is rarely used in real project development. Why

You may need to generate LIBMYSQLCLIENT.A from Libmysql.dll before: sourceCD C:\xampp-1.8.3\mysql\libC:\DevKit-tdm-32-4.5.2-20111229-1559-sfx\devkitvars.batPexports.exe Libmysql.dll > Libmysql.defSource: C:\strawberry\c\bin\pexports. EXE Fortunately

Queried the experience of the great GodHttp://stackoverflow.com/questions/19078044/disable-activerecord-for-rails-4Http://stackoverflow.com/questions/821251/how-to-configure-ruby-on-rails-with-no-databaseThe one I liked the most was the way I used

I remember that when I used ruby1.9.x in OS X10.8, I just had to download and install ActiveTcl8.5, and run TK well without any configuration. But recently want to re-execute the TK code, found in require ' TK ' when the error bird! The ruby2.1.3

Download the integration pack: http://railsinstaller.org/en the rest of the little things other tutorials can also be found, here is not much to say. After installation, open the Rbreadline.rb file under ruby2.1.0\lib\ruby\site_ruby\2.1.0 in the

(1) New gem' Devise '(2) Add devise configuration file/workspace/shop:$ rails Generate devise:install User create config/initializers/devise.rb Create config/locales/devise.en.yml=======================================================================

Transferred from: http://henter.me/post/ruby-rvm-gem-rake-bundle-rails.htmlRubyThat's not going to be a lot.RVMTo help you install the Ruby environment, help you manage multiple ruby environments, and help you manage which Ruby environment is used

In Ruby, the followingCodeYou can obtain the absolute path of the current script: Require 'pathname' puts pathname. New (_ file _). realpath Save the above Code in test1.rb and put it in the root directory of drive D. During the test, we enter

Today, I went to cyberspace to deploy my website for my friends. The server is a Windows2003 server. I did not expect to configure ror on Windows2003 as a nightmare, because I saw a lot of IIS and ror documents on the Internet. If you don't know, it'

Ruby on Rails has always been popular in China and the world. You will see stacked Ruby and Java in Java websites, search engines, and hot forums, and the two of them seem to be incompatible with each other. Even oreilly, a master who has been

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

Quick and concise guide for installing Ruby on Rails and rubyonrails For new entry-level developers, installing Ruby, Ruby Gems, and Rails running environments may be a problem. This section describes how to quickly install the Ruby development

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

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

Ruby uses the proxy mode and decoration mode code instance in the design mode, and the ruby Design Mode Proxy Mode Requirements: James asked Xiao Li to chase Xiao Li for him (send dolls, flowers, and chocolate) No proxy code: #-*-Encoding: UTF-8-*-#

Ruby + selenium-webdriver automate the test step by step ----- preparation, selenium automated test This series of articles is not about ruby, nor selenium-webdriver, but about how to write automated tests step by using a small example of logging on

Tutorial on interrupt and return in Ruby programming and tutorial on ruby programming usage The use of the return, break, and next keywords involves the issue of jumping out of the scope. Their difference lies in the different scopes of different