Ruby

Often we need to store and get data in a more transparent way. The Marshal module provides a simple object persistence, and the Pstore library is built on this technology. The DBM Library is used as a hash and is permanently stored on disk. 1

By using the Hook method, you can allow us to intervene in the lifecycle of a Ruby class or module, which can greatly improve the flexibility of programming.The hook methods associated with the lifecycle are as follows: Class is associated with a

An iterator is nothing but a collection of methods supported. An object that stores a set of data members is called a collection. In Ruby, arrays and hashes can be called collections. The iterator returns all the elements of a collection, one after

Private Private functions can only be invoked in the context of this class and subclass, and can only be accessed by self. This means that the private function can only be accessed within this object. The access rights of an object instance

Files in the same directory, such as/USR/LOCAL/RUBY/FOO.RB and/usr/local/ruby/bar.rb two files.If you are directly in the FOO.RB Require ' bar ' A bar.rb error cannot be found at execution time.This is because the running /home/

To prove that Ruby really works, Hello World can write so succinctly: Copy Code code as follows: Puts ' Hello World ' 1. Input/output Copy Code code as follows: Print (' Enter your name ') Name=gets () Puts

%{string} is used to create a string enclosed in double quotes%q{string} is used to create a string enclosed in double quotes Copy Code code as follows: Str=A string End_of_string %q! Some String of "Characters"! "Some

A regular expression is a special sequence of characters that matches or finds a collection of other strings or strings by using a pattern that has a specialized syntax.Grammar A regular expression is literally a pattern between a slash or between

Tutorial Requirements The following techniques and resources are required to learn this tutorial: Database server NetBeans IDE 6.0 with Ruby support To create a sample database This tutorial builds the relationship between the Rails model based

After cloning the project on the server, the local test shows "activerecord: connectionnotestablished" This error occurs because the server wants to connect to the database and the database cannot be found, At this point, we need to execute data

We are currently training our company on Ruby + cucumber (mainly testers). Our goal is to help people throughout the project master how to use Ruby + cucumber to compile testcase. there is no in-depth research on Ruby, but it is only necessary to

ProgramEncoding is generally divided into several situations:1. source code file encoding2. receive external Content Encoding3. Runtime Environment Code4. Operating System Code First, you can add a line of declaration in the header of the Ruby

Ruby is... A dynamic, open source programming language with a focus on simplicity and productifunctionality. It has an elegant syntax that is natural to read and easy to write. Translate and organize documents of common Ruby libraries, and

I just posted a few songs in the music space and typed a few Ruby words. Code Popularity Require ' Net/HTTP ' Count =   1 .. 100000 # Define an array Count. Each { # Each | Index | # Element is

"% 05d" % 123 the result is "00123""% 02x" % 10 returns "0a""% 03x" % 10 the result is "00a""% 010x" % 10 returns "000000000a" (9 prefixes 0)"% 10x" % 10 returns "a" (with a prefix of 9 spaces) We can see that the first digit is the prefix,

 Link: http://mislav.uniqpath.com/poignant-guide/book/chapter-2.htmlchapter 2: kon'nichi wa, Ruby Section 1: Open this book Pretend that you have already opened this book (although you may have already opened this book), you only find that there is

From: http://developer.51cto.com/art/200908/147276.htm It is difficult to install Ruby on Rails, but it is also very convenient. To develop applications based on Ruby, we must install Ruby, Gem, rails, and mongrel. How to install Ruby on

Due to work relationships, I have never had time to learn Ruby. Recently, I finally had time to learn Ruby. I also opened a blog on csdn to record my learning experience, of course, it's not just Ruby. In recent years, dynamic languages have been

Recently, I am reading the ruby hacking Guide (the ruby source code is completely explained, and the ruby hacker has been fully explained. I saw a team translating on the Internet. Unfortunately, I didn't find any good translation results, so I had

Communication between unicorn and nginx -- [ruby unix socket], unicornnginx Article Source: [Chang Bo ke] http://www.xefan.com/archives/84146.html   Ruby application services are typically used together with a web service, such as nginx. When a