Ruby

It's really tedious to install/update the Ruby environment under your Mac.First, Mac OS X comes with a ruby environment, and we manage the Ruby version with RVM (Ruby version manager)Just execute the following 2 sentences:$ gpg2--keyserver

As a software engineering student, recently wanted to learn a scripting language, after some query, understand that Ruby and Python are pretty good choice, but may be more inclined to diversification and liberalisation, because python to achieve

The Observer pattern (sometimes called the Publish/Subscribe mode) is one of the software design patterns.In this mode, a target object manages all the observer objects that are dependent on it and proactively notifies when its own state

Template mode is good, but it still has some flaws. For example, its implementation relies on inheritance and lacks sufficient flexibility. At this point we need to find a more optimal solution-the strategy model.The following is the report template

7. Class(1) Initialize method, Initialize is a special method, the default is private, when calling new to create a new object, Ruby first allocates some memory to hold the uninitialized object, and then calls the object's Initialize method,(2) The

This two weeks work more content, usually oneself also a bit not in the state, learn something a little, take advantage of now still a bit state, hurriedly review before study of Ruby Bar.Ruby was the first language that I really started to touch

The main purpose of module is to put different methods and constants into different namespaces. The module is named in the same initial capitalization as the class, with multiple words without underlining. such as: Circlearea Module syntaxModule

This article describes how to use Nginx+passenger to deploy the Ruby on Rails environmentThe operating system version used in this article is CentOS6.51. Install Rubywget

Demand:Investors buy and sell stocksPreliminary code:#-*-encoding:utf-8-*-#stock 1classStock1defbuy puts'stock 1 Buy'EnddefSell puts'stock 1 Sell'EndEnd#Stock 2classStock2defbuy puts'stock 2 Buy'EnddefSell puts'Stock 2 Sell'EndEnd#Stock

Ruby-package program, ruby-Package 1. Download ocra-1.3.1.gem files 2. Open the "start Command prompt with ruby" Command window. 3. Enter "gem install e: \ ocra-1.3.1.gem-l" to install gem, #=> "Successfully installed ocra-1.3.1" 4. Enter "d: \>

Basic Ruby knowledge: Data Type and basic ruby knowledge I. numeric type (1) IntegerThere are two types of integer types. If the value is within 31 characters (four bytes), it is a Fixnum instance. If the value is exceeded, it is a Bignum

Every programmer should learn to use Python or Ruby If you are a student, you should be C, C ++ and Java. There will also be some VB, or C #/. NET. You may have developed some Web pages. You know some HTML, CSS, and JavaScript knowledge. In general,

Use Ruby to write a tutorial on accessing the Twitter command line application, Introduction Twitter has become a leader in social networks. Twitter only allows users to publish content of no more than 140 characters. Who can think of it? This

Differences between p and puts in Ruby: rubyputs P and puts are especially common methods in Ruby. Many children's shoes may think that they are similar and do not pay attention to them when using them. However, they are obviously different from

Potential and Weakness Analysis of Ruby multithreading, and ruby Multithreading Most Web applications are IO-intensive. Using the Ruby multi-process + multi-thread model can greatly increase the system throughput. The reason is: when a Ruby thread

Grape entry, grapeseed 1. grape is a restful ruby microframework running in rack or used in combination with rails/sinatra. It simplifies APIs development by providing simple DSL (domain-specific language. it supports built-in general constraints

In Ruby, multithreading Queue (Queue) is used to download blog articles and save them to a local file. rubyqueue Ruby: complete code for downloading blog articles locally using multiple threads Copy codeThe Code is as follows:# Encoding:

Examples of commonly used string processing functions in Ruby and ruby instances 1. Return the length of the stringCopy codeThe Code is as follows:Str. length => integer2. Determine whether the string contains another stringCopy codeThe Code is as

Ruby implements a powerful batch file deletion script sharing and ruby deletes file scripts. Recently, the number of apk packages on the server has increased, making manual rm operations too troublesome, it took several minutes to write a script to

Ruby constant search path problem in-depth research, ruby constant The constant path search problem in Ruby has been a problem that has plagued me all the time. I have encountered several times in my work and have never thoroughly figured out why. I