Ruby

1. Send email via SMTP Every week Holden Glova,pat Eyler, and Phil Thomson submits a Ruby http://www.rubygarden.org/News (Weekly) article to the Ruby Garden website (rwn). A Ruby script receives this article via email, converts it from the original

The iterator was not invented by Ruby. It is widely used in all kinds of object-oriented languages. In Lisp, it's just not called that. However, the concept of iterators is not familiar to many people, so we will do a more detailed description here.

What is an accessor? We've discussed the real variables before, but not too much discussion. The real variable of an object belongs to its property and is a general difference from other objects from the same class. It is important to read and

Ruby Regular Expression Three methods of representation: Regexp.new (' ^s*[a-z] ') /^s*[a-z]/ %r ... {^s*[a-z]} Test code: Def show_reqexp (A, re) if a =~ re "#{$ '} > #{$ '} ' else ' no match "End end puts Show_reqexp" ("Fats Waller",/ll/)　　　　

1. Another talk about Ruby arrays. Class Test A = [1, 3, 5, 7, 9] puts A[0] #----->1 puts a[-2] #----->7 puts A[1 , 3] #----->[3, 5, 7] puts A[-3, 2] #----->[5, 7] puts a[1..3] #----->[3, 5, 7] puts a[1...3] #----->[3, 5] a[2] = ' cat ' #----->

Introduced The string and block solver that contains the code is one of my favorite Ruby features. Ruby offers a variety of different types of solutions, but what I use most is the following: eval, Instance_eval, and Class_eval. Module.class_eval

Today, follow the depot example of the agile Web Development with Rails to automatically generate scaffold from a database table. That day in the company to do this example, feel quite smooth, did not expect to change to the home today after the

Ruby language in the programming world can be said to be an up-and-comer, the purpose is to help programmers more simple and flexible to write code programs to complete their own functional needs. For example, in Ruby implementation stream.

This article mainly introduced the Ruby metaprogramming to create its own dynamic method, this article explains the use of method_missing and respond_to? To create your own dynamic method, you need friends can refer to the following Method_missing

Now that we know how to specify conditions, let's look at some of the other settings supported by the Find method. First of all, understand find (: primary,...) method is very important, and the method is set under the same conditions, and find (:

In the last content, we created the order model, and the presentation page, this time continue to write checkout processing. 1. On the checkout.rhtml page, there is a checkout button, the last time you have not written it processing code, now add

The Active record provides two ways to delete operations. First, there are two class-level methods, delete and Delete_all, at the database level, and the Delete () method receives one or a set of Id,delete_all () methods corresponding to the

Ruby and rail: Regression framework Ruby and rail are very concise, very easy, very rich. I can't avoid the continual seeing and hearing the above argument. For example, Bill Walton's rail review on Ruby said: "What would you think if I told you

An exception. Find the rails file in the bin directory under the ruby installation directory, for example, C: \ ruby187 \ bin.Modify rails by addingRequire 'thread' #! C:/ruby187/bin/ruby.exe # This file was generated by rubygems. # The

When getting started with Ruby, it is easy to get confused by the small trick of its classes and modules. Here we will write it out to help you understand it. 1. Everything in ruby is an object Ruby is a Ground Object. All the components you see are

Demo WebService public addnumber method:[Webmethod] Public int addnumber (int x, int y) { Return X + Y; } WebServices calling using Ruby: Require 'soap/wsdldriver' WSDL = "http: // localhost/webapptest/webservicesdemo/demo. asmx? WSDL"Params =

Def traverse_dir (file_path) If file. directory? File_path dir. foreach (file_path) Do | file | if file! = "." And file! = ".. "Traverse_dir (file_path +"/"+ file) end else puts" file: # {file. basename (file_path)}, size: # {file. size (file_path)}

Learning notes for beginners on the first day-python loop control and the first python game, python-pythonThree logic controls of Python 1. python syntax. Python is based on indentation. The indentation of the same Code must be consistent. Otherwise,

Use virtualbox + vagrant in win10 to configure the ruby development machine environment, win10virtualbox Before writing this article, I have tried a variety of alternative methods, such as installing kylin ON THE wmware virtual machine. However,

Compilation and installation from ruby source code in win7, and win7ruby source code compilation At work, we need to embed ruby c api in c ++ Code. However, compilation fails in the vs project, so we can find the reason by manually compiling ruby