ruby on chromebook

;> array = [1,2,3, This is the Here-doc. It becomes array[3] EOM => [1, 2, 3, "This is the here-doc.\nit becomes array[3]\n", 4] As a method parameter: Do_something_with_args (A, B, Http://some_very_long_url_or_other_text_best_put_on_its_own_line EOM String handling Get and set substring The [] operator can get a character from a position in a string. An index number is provided, the index number is zero-based, and the index of negative numbers refers to the las

recently took over a Ruby Web project, and since it was not previously exposed to Ruby and related web development, and the document was missing, it was a bit of a detour to deploy the project .。Finally, we have successfully deployed the project by referring to several Ruby on rails development environment deployment and learning the relationship between Gem/bund

The reason we started this series was to help people in need, if in this program, you see a very like the app, you can share to the basin friends or family yo, alone Lele as the public Lele ~ We sincerely hope to help you find a fun application, you

Enter the interactive interpreterpythonIrb/prySet Encoding#coding =utf-8#coding: Utf-8Package ManagementEasy_install/pip GemPip Install MarkdownGem Install MarkdownNotesPython line Comment # startsPython Multiline comments use three single quotation marks ("') or three single quotation marks (" ").‘‘‘Multi-line Comment 1Multi-line Comment 2‘‘‘Ruby Line comment starts with #Ruby Multi-line annotations use =b

Let's write a function to calculate the factorial. The mathematical definition of the factorial is as follows:N! = 1 (when n = 0)= N * (n-1 )! (Other Cases)In Ruby, you can write as follows:Copy codeThe Code is as follows:Def fact (n)If n = 01ElseN * fact (n-1)EndEndYou may find that end appears repeatedly. Because of this, Ruby is called the "Algol" language. (In fact,

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 cannot be better or worse than the NLP language itself. However, it is time and demand to become a popular language. Just like Ajax technology, to be honest, it is really an old technology that has been ap

ArticleDirectory Ruby source code Windows Linux Here, you can download the latest Ruby version suitable for you. The current stable version is 1.8.6. Read the ruby open source license before downloading it. Ruby Source code If you want to make it more compatible with your platform or you ne

Ruby on Rails ...... It has nothing to do with. net ...... The homepage is for more people to access Ruby on Rails ...... Withdraw tomorrow ...... Http://www.blogwind.com/Wuvist/16993.shtml By the way, I use Mac, and the cute editor used in blog Park has become a text area in safari. However, the latest version of cute editor is already compatible with safari to some extent ...... After reading the video o

This article uses a simple example to illustrate how to write a ruby script to perform Oracle database operations. The main steps are as follows: 1. Download Ruby at the following address: Http://www.ruby-lang.org/zh_CN/downloads/Here we download the ruby Windows version:Click: Ruby 1.8.6 step installation connecti

A series of questions elicited by Easyios: the previous Cocoapods installation and use tutorial in the reprint explains why you should use Cocoapods, but to install cocoapods requires a ruby environment, Installing the ruby environment first requires the installation of Xcode (because of the Xcode development tool, he helps us install the development packages needed for the UNIX environment) and then needs

Ruby You don't need to talk about this. RVM It is used to help you install the Ruby environment, help you manage multiple Ruby environments, and help you manage the Ruby environment on which the Ruby application you develop uses the machine. The

Ruby is a fully object-oriented interpreted scripting language. For such a new programming language, its features are very attractive to programmers. Let's take a look at the concepts related to Ruby threads. How to call win32ole IN Ruby Ruby basic code Experience Sharing Summary of several common

Php-python-rubyOriginalA word summaryTo summarize briefly:If you want to help him find a job as soon as possible, make money, recommend PHP.If you want him to be an efficient engineer, recommend Python.If you want to make him fall in love with his job, Ruby is recommended.Choice of languageProgramming languages are very important, don't think they are all Turing equivalents, and use them all the same. In fact, the good language, the thing that brings

This article mainly introduces the introduction of CGI programming with Ruby Guide, writing CGI script is also ruby for network programming, a basic function, the need for friends can refer to the To write a CGI script: The most basic ruby CGI script looks like this: ? 1 2 3 4 5 #!/usr/bin/ruby puts

In this chapter we will discuss more Ruby process control. Case We use case statements to test for ordered conditions. As we have seen, this is quite close to the switch of C,java, but more powerful. Ruby> i=8 ruby> case I | When 1, 2..5 | Print "1..5\n" | When 6..10 | Print "6..10\n" | End 6..10 Nil 2..5 represents a range between 2 and 5. The following exp

Web applications are mostly IO-intensive, and using Ruby's multi-process + multithreaded model will greatly increase system throughput. The reason for this is that when a ruby thread is in the IO block state, other threads can continue to execute. But because of Ruby GIL (Global interpreter Lock), MRI Ruby does not really use multithreading for parallel computing

-get Install bag Name The software installation timed out for a variety of reasons at home. You are in the bottom of the installation process, if there is a positive rejection of the server, 80% of the possible line is by the wall. Or be your company, home network screen off or appear a slow, half a day does not move phenomenon, congratulations, you have to change the source address. RVM Workaround: After installing RVM, make sure that RVM-V can perform the following command to replace se

Relevance Consulting's Stuart Halloway recently wrote a series of blog posts about the "Ruby vs. Java Geek talk". The inspiration for this series comes from his recent experience with a zero-start, previously constrained Ruby project that has been reversed to a full-fledged Java project. In the course of the project which lasted many days, Halloway explored the following "Mistaken ideas": 　　One of the myths

Recently, to learn new projects, you need to learn new languages to complete tasks. This language is Ruby that has been heard but never learned and practiced, the previous visual image is often used in comparison with python. Of course, it is a little later than python. It draws on some things of Python and implements some features not available in Python. There is no direct comparability, but I still think python is easy to use. [Python's purpose is:

Compared with Java and. NET platforms, dynamic languages are lightweight, flexible, and efficient in development, but there are still some gaps in integration cohesion. Therefore, they are usually used as lightweight solutions. LAMP is a network development platform consisting of Linux, Apache, MySQL, and scripting languages including PHP, Perl, Python, and Ruby, it features openness, flexibility, rapid development, convenient deployment, high configu