ruby decorator

"Design pattern Refinement" Learning notes (11)------Decorator (decoration) mode GoF : Dynamically adding some additional responsibilities to an object. Decorator (decorative) mode is more flexible than generating subclasses in terms of adding functionality. In the process of system development, we want to add some functionality to an object rather than to an entire class. For example: We have to do a doo

Introduction: Ruby on Rails is just one aspect of making Ruby very powerful, just as EJB is part of the Java Enterprise platform. Andrew Glover reveals what Java developers can do with Ruby. Before I begin this article, I need to clarify a few things. First, it's not an article about Ruby on Rails. If you want to lear

What is decorator mode Decorator mode is a technique for adding features to a function or class, which allows us to add new capabilities and behaviors to it without modifying the original object. It is also essentially a function (in Javascipt, the class is just the syntactic sugar of the function).When are we going to get it? Let's assume a scenario where a bike shop has several models of bikes, and now th

Ruby image installation, ruby Image Because of the domestic network, the intermittent connection of resource files stored on Amazon S3 by rubygems.org fails. So you willgem install rackOrbundle installHalf a day without response.gem install rails -VTo view the execution process.This is a complete rubygems.org image. You can use this image to replace the official version. The synchronization frequency is cu

An adorner (decorator) is an advanced Python syntax. Adorners can be used to process a function, method, or class. In Python, we have several methods for working with functions and classes, such as in Python closures, where we see the function object as the result of a function's return. With respect to other methods, the adorner has a simple syntax and a code with high readability. As a result, adorners are widely used in Python projects. The previo

The adorner in Python is a very useful thing, and we can write some specific methods and common methods into a decorator, which provides a great convenience for invoking these methods, thus improving the readability and simplicity of our code, as well as extensibility. Before learning the Python decorator, let's take a look at one of these examples: First, scope # coding:utf-8 msg = ' Hello test1 ' def Ad

Decorator Mode 1. Intention Dynamically add some additional responsibilities to an object. The decorator mode is more flexible than the subclass generation function. -- Wrapper. Two motivations Sometimes we want to add some functions to an object instead of the entire class. For example, a graphical user interface toolbox allows you to add some features to any user interface component, such as bor

Welcome everybody to put forward the opinion, discuss together! Reprint please indicate is quoted in http://blog.csdn.net/chenyujing1234 Example code: (Compilation tool: Eclipse) http://www.rayfile.com/zh-cn/files/1291b5bd-9418-11e1-b6a1-0015c55db73d/ Reference books: The decorator pattern (decorator [' dekəreitə] pattren) is the ability to dynamically extend an object without altering the original clas

How to learn ruby at high speed ? The quickest way to learn a language.variables, constants, variable types, operators.Logical statements such as if, else, switch, for, foreach, does while, break, and so on. What languages do you want to learn? What are the commands that are similar to these commands? Know how to use it. Then, assuming object-oriented, you need to understand the object's operation.There is no library of functions. The general language

Installing Ruby with Upgrade RubyGemstip: If you are prompted for permission issues during the installation process in the Ubuntu environment, you can use sudo make and sudo makes install. 1.Ruby Installation wget http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p125.tar.gz \ TAR-XZVF

Solve ruby Installation Problems: redis requires Ruby version amp, rubyredis I. Problem Description Today, we set up a redis cluster and encountered a problem when installing ruby and redis interface programs: redis requires Ruby version> = 2.2.2., as shown below: [root@localhost ~]# gem install redis-4.0.0.gem ERROR

Designpatterns Study Notes: C + + language implementation---2.3 Decorator2016-07-22(WWW.CNBLOGS.COM/ICMZN) Pattern understanding1. Decorator Mode definitionGenerally can be divided into 4 characters(1) Component abstract class: Defines the abstract behavior or characteristics of the person being adorned.(2) The specific component class: The specific object to be decorated.(3) Abstract Decorator class: