Ruby

Source Code Compilation Installation ruby-2.21, access to source packages;wget http://cache.ruby-lang.org/pub/ruby/2.2/ruby-2.2.2.tar.gz2. Install dependent packagessudo apt-get install-y build-essential OpenSSL curl libcurl3-dev libreadline6

CMD under: ruby-v successInstallation using SASS1: Removing the http://rubygems.org sourceGem Sources--remove https://rubygems.org/2: Add Taobao sourceGem Sources-a https://ruby.taobao.org/3: See if the first two steps were successfulGem Sources-l4:

#encoding: Utf-8Require ' mail 'def Send_email sum,fail,case_path,name,receive SMTP = {: Address = ' smtp.mobanker.com ',:p ort =,:d omain = ' mobanker.com ', : user_name = ' [email protected] ',:p assword = ' nl102thxfd2z! ', :

Chapter4:starfish (starfish?) This example has the time to change the Linux environment to try it STARFISH1 bills itself as "a utility to make distributed programming ridiculously easy." I think that's a bit of a overstatement, but the

The data for Ruby operations is mainly in parts: objects, classes, variables, constants.ObjectThe basic unit of data represented in Ruby is called an object, and everything in Ruby is an object.Common objects: Numeric Objects2, 3.14, 5 and

There are several ways to choose Strip () #对字符串中间的空白不做任何处理 \tHello\n world.\r\n \n\tHello\n world.\r\n \n world.\r\n \tHello\n world.\r\n \tHello\n world."*gsub () #用正则表达式全字符串匹配Irb (Main):020:0> "\Thello \n world \r\n ". gsub (/\s+/

Kernel#eval () method, you can directly execute Ruby code string(1) The Kernel#binding () method is used to capture the current scope to return a binding object that represents a complete scope(2) eval () can accept two parameters, the first is a

Ruby-2.1.1-#downloading rubygems-2.2.3% total% Received% xferd Average speed Time Time currentDload Upload Total spent0 0 0 0 0 0 0 0--:--:--0:00:01--:--:--0curl: (+) The requested URL returned Error:4 Found notThe requested URL does not exist: '

Classtrace. RB: #encoding: utf-8module ClassTrace T = [] #定义数组常量T，存放trace信息 if x = ARGV.index("--traceout") #如果ruby命令后面有--traceout参数，则记录到文件中，否则输出 OUT = File.open(ARGV[x + 1], ‘w‘) ARGV[x, 2] = nil else OUT = STDERR endendalias

Ruby is an object-oriented programming language, which means the programming structure it operates on is called "object" First go to the Code to understand the definition and usage of the class. Class computer $ manufacturer = "Mango computer, Inc."

The ruby language has existed for a long time and has never been popular in China. Many people only know such a language and there are few people. No matter what language has been developing for more than a decade, it must have something unusual. It

My memory has been poor and I need to take a look at it. Today I will look at Ruby's object-oriented programming content and write down some of these concepts for future reference. Basic concepts: I. Local variables, global variables, instance

Both alias and alias_method in Ruby can be renamed. The differences between them are as follows:   1. Alias is a keyword of Ruby, so it is alias: newname: oldname. Alias_method is a method of the module class. Therefore, alias_method: newname,

Cloud 9 Adapt Project on Heroku (Week V), adaptheroku Advanced Software Engineering Week V --------------- Write in front ------------------------- Https://moonsea.herokuapp.com/ Attach the link. This is the function to be implemented. --------------

Differences between require, load, include, and extend IN Ruby: rubyrequire Require and load are used to end files, such as. rb. Include and load are used to include modules in a file.Require is generally used to load library files, while load is

The following is an example of the Iterator usage in Ruby. IteratorDefinition A Ruby iterator is simple a method that can invoke a block of code. The Block is generally followed by the method, and the code in the block may not necessarily be

Notes for writing Ruby code Annotations: Write the code of the self-explanatory document and let this part rest. This does not mean playing.Write comments in English.Use a space to separate comments from symbols.When more than one word is commented,

Matrix concatenation algorithm implemented by Ruby and ruby matrix concatenation Dynamic Planning solves the problem of matrix concatenation, generates matrix sequences randomly, and outputs results in the form of (A1 (A2A3) (A4A5. Code: #encoding:

In the tutorial of using AJAX in Ruby on Rails, railsajax If you have never heard of Rails, you are welcome to return from an alien trip. In recent years, you have probably never heard of Ruby on Rails. The most attractive part of Rails is the

An asynchronous file download HttpServer instance implemented by ruby, 1. Use ruby eventmachine and em-http-server gem to complete a simple HttpServer that provides the file download function. 2. The FileStreamer of EM is used to send files