Ruby

To use sass, you need to ruby2.0 the above versionUbuntu upgrade Ruby to 2.11. Pre-installation update: sudo apt-get-y updatesudo apt-get install Cmakesudo apt-get install-y build-essential Zlib1g-dev libyaml-dev libssl- dev libgdbm-dev libreadline-

Configure the Ruby environment before installing cocoapods, this article summarizes how to install the ruby environment. Installing the ruby environment requires first installing Xcode and then installing homebrew, and then installing RVM to install

#enconding: Utf-8require ' selenium-webdriver ' require ' rspec ' describe "Baidu Main Page" doit "should has Baidu button on the Baidu Main Page "DODR = Selenium::webdriver.for:ieurl = ' www.baidu.com ' Dr.get urldr.find_element (: ID, ' su ').

#!/usr/bin/rubyputs"Hello, Ruby, what is your name?"$name=stdin.getsputs"Hi, I am"+$namedefWelcome (Name,a = 9,b = 9,*c) puts"Hi #{name}"c.each{|x|Print "#{x}"}#print "a =" + $aA = 10; b = 11#print "Hi, B" + $bres = A *Bend#Welcome ("RUBY")Puts

#break: Terminate the program, jump out of the loop #next: Jump to the next loop, the result of this loop does not do the processing #redo: In the same condition repeated just the processing i = 0names = ["Perl", "Pyhton", "Ruby",

Alternative class use, save code, clear and conciseUsing structSelectoption = Struct.new (:d isplay,: value) dodef to_ary[Display, value]EndEndOption_struct = Selectoption.new ("Canada (CAD)",: CAD)Puts Option_struct.display# Canada (CAD)Puts Option_

Rbenv is very useful, but with a small problem, each user needs to install and set up the version separately. The following installation steps can be installed under/usr/local/rbenv, and all users can share rbenv.   #rbenv安装 (/usr/local/rbenv) #安装依赖,

Include a table but or a variable in a ruby string. To replace an expression or variable with a different value1 Printf-style methods like Java or PythonTemplate ='Oceania have always been at the war with%s.'Template%'Eurasia' #= = "Oceania have

1) related knowledge of classes, objects, methods, variables, etc.classfixnum #Ruby下的数值的类型是Fixnum或者Bignum @ @words= ["Zero"," One"," Both","three"]; #类方法 alias Original_addition+ #使用alias重命名关键词defsay #向Fixnum中添加新的对象方法 P @ @words [self.to_i];

It's been confusing. Ruby is not like python,c can pass functions at will, and then execute them when needed. The essential reason is that Ruby's function is not an object.The following methods can be used to find out the data:def func (A, b) +=

Recently because of learning puppet related knowledge, so learn the knowledge of Ruby, here is a summary of some of the introduction.The start and end statements of Ruby.　　BEGIN { code}end{ code }Variables in the class:The local variable "_"

=begin         #字符串          #数字, Several classes of numbers:   fixnum: The largest integer value that the native machine byte can store, and  bignum: An integer value that exceeds the maximum integer value that can be stored by the native machine

Basic Learning of classes and methods in Ruby object-oriented programming, and ruby Object-Oriented Programming Enable class and monkey PatchesIn Ruby, the Class-defined method is no different from other statements and is executed in one row.

Ruby: Build a Ruby environment in Linux Ruby Learning Experience: Build a Ruby environment in Linux1. Preface2. Install the Ruby environment in Linux  I. Preface This blog post records the establishment of the Ruby programming environment in

Introduction to the adapter mode of Ruby Design Mode Programming, and the ruby Design Mode Adapter ModeThe adapter mode can be used to encapsulate different interfaces and provide unified interfaces, or make an object look like another type of

Ubuntu15.04 install RVM, First, please refer to this article Https://ruby-china.org/wiki/rvm-guide Official website of RVM Https://rvm.io/   1. Because many websites now turn to https links, according to the official rvm tutorial In addition, it is

Ruby Object-Oriented Programming learning note, ruby object-oriented Open Class You can re-open an existing class and modify it dynamically, even if the class of a standard library such as String or Array is no exception. This behavior is called

Tutorial on using Nokogiri package to operate XML format data in Ruby, rubynokogiri Install For Ubuntu, you need to install libxml2 and libxslt: $ apt-get install libxml2 libxslt Then you can: $ gem install nokogiri OptionalNokogiri provides some

A simple example of sending HTTP-based requests in Ruby programs. 1. Establish an HTTP connection (Send request parameters through GET) Require "open-uri" # Write the GET Request Parameters in the uri url uri = 'HTTP: // uri 'html_response = nil

A Brief Introduction to Ruby's private, protected, and rubyprotected The following section of the program has plagued me for a long time. The concept of private in Ruby is really strange... Class Test private def test_print puts 'test' endendclass