ruby mixin

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

To install Ruby, go to the ruby official website to download the Windows Installation Package of ruby1.56. After installing Ruby, open the DOS window and enter ruby-V to display it. Ruby 1.8.6 (patchlevel 0) [i386-mswin32] indicates that

Tutorial on processing file input and output in Ruby, and tutorial on ruby processing output Ruby provides a complete set of I/O-related methods, which are implemented in the Kernel module. All I/O methods are derived from IO classes. Class IO provides all basic methods, such as read, write, gets, puts, readline, getc, and printf. This section describes all the b

I've been working on Ruby for a while and have recently had some leisure events, learning about Ruby and preparing for future Ruby on Rails development.Ruby was founded in 1993 by as of Japan (まつもとゆきひろ/yukihiro Matsumoto). In contrast to chatty's development language such as Java, Ruby can be said to be small and beaut

[Ruby on Rails Learning 1] ubuntu14.04 configure rvm and ruby, ubuntu14.04rvm To install ruby, you must first install rvm. Rvm is Ruby Version Manager, a command line tool developed by Wayne E. Seguin. Rvm allows you to easily install and manage ruby productivity environmen

Introduction to Ruby operators and statement priority, ruby operator priority Ruby is a language with strong expressive power. It is proud of its rich operators and syntactic sugar. Although Ruby has always regarded the principle of least surprise as one of its philosophies, but it is often surprising that it is diffic

Object array sorting in Ruby and Ruby object array sorting Sorting of Ruby object arrays The author has just come into contact with Ruby, because he previously thought that the script language syntax is not standardized and he is somewhat biased against the script language. For example, he does not need to learn PYTHON

Concurrent concurrency and global lock details in ruby, and ruby parallel global explanation Preface This article mainly introduces you to ruby concurrency and global locks. We will share the content for your reference and learning. I will not talk much about it below. Let's take a look at the details. Concurrency and Parallelism During development, we often come

Ruby Learning tips for building a ruby environment under Linux1. Preface2.Linux Installing the ruby EnvironmentFirst, prefaceThis blog post records the construction of the Ruby programming environment under Linux.This article is based on the following articles:Http://www.cnblogs.com/xfiver/archive/2012/03/08/2385833.ht

Array usage in Ruby, ruby array usage Ruby arrays are ordered. What about any object ?? The set of integer indexes. The elements in each array are associated and an index is mentioned. Array subscript starts from 0, such as C or Java. Negative index assumes that the end of the array --- that is,-1 indicates the array index of the last element,-2 is the next eleme

Some basic operations on Ruby processing time, And ruby processing basic operations Get the current date and time: The following is a simple example to get the current date and time: #!/usr/bin/ruby -wtime1 = Time.newputs "Current Time : " + time1.inspect# Time.now is a synonym:time2 = Time.nowputs "Current Time : " + time2.inspect This produces the following res

is not a professional web crawler crawling, just before a very bad site to help people brush the ticket started to learn the web crawler tools.The initial time is to use the Python urllib2, get the page when the text processing, later in the forum to see the Beautifulsoap this level of artifact, Python processing this is really convenient, but later I met the Ruby and rails, from the faithless, Even read the metaprogramming

Some basic knowledge about modules in Ruby and basic knowledge about Ruby modules A module is similar to a class. It can also be called a class that cannot be instantiated ". Because the Class is a subclass of the Module Class, it may be better to say "Class = Module + instantiation Capability. What is the so-called module used? There are two main types of functions: Mix-in and namespace. Mix-in is actually

mechanism. python can use _ getattr _ to intercept undefined methods (from Qiezi) 13. Ruby uses single inheritance + Mixin, and python uses multiple inheritance, but Python also has Mixin 14. Ruby has the ATTR _ * series syntax helper, saving you the trouble of writing a bunch of setter/getter. The Python property m

The founder of Ruby talked about the ruby blocks and closure structure at on. I want to repost on Qiu Haifeng's translation network (0) font size: T | T This conversation is translated from the third part of the interview with Matz on the artima.com website to help you understand the blocks and closure structures in ruby. AD: This interview is an interview with