Ruby

Comparison of Ruby and Python syntax         In fact, Ruby is very similar to Python, and it is much closer than most other languages, so you can

Ruby contains "! "And no "! "The biggest difference between methods is that "! "Will change the calling object itself. For example, str. gsub (/A/, 'B') does not change STR itself, but only returns a new Str. Str. gsub! (/A/, 'B') will change the

In many cases, when you design your applicationProgramYou may want to implement a method that is only used inside an object rather than other objects. Ruby provides three keywords to restrict access to methods. · PRIVATE: Only methods

A very simple file is the example (http://www.ruby-cn.org/book/ProgrammingRuby/ext_ruby.html) on programming Ruby, and if the extension is CPP, the following error occurs: Error c2664: 'rb _ define_method ': cannot convert parameter 3 from'Unsigned

Net: SMTP is easy to send emails, but it does not support sending attachments directly. You can install mailfactory to implement this function. 1) install mailfactory Run: Gem install mailfactory   2) supports Chinese The mailfactory

1. NotesThe comment starts with # and ends with the end of the line.If the # character appears in a string or regular expression literal, it serves as part of the string or regular expression rather than introducing a comment.# This entire line is a

Next we will introduce a commonly used IDE development tool. We believe you are familiar with netbeans and eclipse. Here I will mainly introduce netbeans as the main tool, if you want to know how to build Ruby in eclipse, you can search for relevant

Since last year, JavaCommunityStart to discuss a "new"Programming Language: Ruby: the scope of this discussion is growing and more participants are involved. Even Gosling, the father of Java, is involved. However, the common understanding is that

Many documents describe how to use the gem (one-click Ruby installer is already included, and you can use the gem after installation) for Remote Installation. If the network is poor, the installation will fail. I can see an article on the Internet

Ruby Study Notes Ruby usageThe first half of RubyWe are defining, we are creatingFor example, blue_crystal = 1, leaf_records = 5 The second half of RubyPutting things in motionFor example, pipe. catch_a_star Conclusion: 1. Defining things 2.

Another classmate wrote a slightly garbled blog, revealing a yearning for "everyone still uses Java. Let alone the article itself. Just talked to Paul hammant about jruby in recent days. To put it simply, a classmate's guess is just a guess. The

Document directory About Style About Dynamics Structure Others Usage /*************************************** * Call by name Everything is an object and never closes Hook everywhere Yield/block/proc/Lambda, first-class citizen Symbol and

Due to work relationships, I have never had time to learn Ruby. Recently, I finally had time to learn Ruby. I also opened a blog on csdn to record my learning experience, of course, it's not just Ruby. In recent years, dynamic languages have been

Exception Handling is a common problem in the development process. Basically, all advanced languages have their own exception handling systems. Ruby is no exception and is easy to use. The raise method is used to throw exceptions in Ruby. Remember,

So which of the three ages is the best to use on your project? That depends a great deal on what you want to accomplish. to wrap up the book, I 've outlined some of the pros and cons of each language in this section. which of the three languages is

Songben launched Ruby 1.9 on Christmas Day. According to Ruby's convention, if the first digit after the decimal point is a singular number, it indicates that this is an experimental version and is not recommended for product environments. The

The ruby method can accept code blocks as parameters, which is a very flexible method and a very good design idea. Suppose there are three methods as shown in 1: Figure 1 As shown in figure 1, a large number of code blocks of method A, Method B, and

Well, our function test code often has a small requirement: When a function in the test code throws an exception, the system automatically displays a debugging window. The debugging window should contain context information for the tester to debug

I am very busy recently. Work from morning till night. Do not write a blog. You don't even have time to read a blog. Although I have always wanted to gossip about JavaScript, And I have betrayed the revolution, I can't leave it blank. However, I can'

I recently read the basic syntax section of [ironruby unleashed feb.2010] and found that "use a different..." appears in many places in the book. Indeed, many basic operations in Ruby provide many methods/aliases, and many odd syntax (sugar ). In