Ruby

Before you start About this tutorial Ruby on Rails (rails) is a full-stack WEB application framework written in Ruby, and Ruby is a rich, free, extensible, portable, object-oriented scripting language. Rails is very popular among WEB application

Monkey Patch (Monkey Patch) is a special programming technique. Monkey patch can be used to dynamically modify (extend) A class or module at run time. We can modify the Third-party libraries that do not meet our needs by adding monkey Patch, or you

Adapter modeadapter patterns can be used to wrap different interfaces and to provide a unified interface, or to make an object look like an object of another type. In a static type of programming language, we often use it to satisfy the

Ruby offers a conditional structure, which is common in modern programming languages. Here, we'll explain all of Ruby's conditional statements and modifiersRuby If...else Statement:Syntax: If conditional [then] code ... [elsif conditional [

Well explained, it should be clear that a lot of Ruby Symbol detailed Cause The recent learning of Ruby on Rails is indeed an excellent database development framework. In the process, however, it is found that there are a number of statements

Arrays (array), hash (hash). The items in the array are in order, and you can get the corresponding items with the index number. The items in the hash are paired, there is a key in a pair and a corresponding value. The value of the project can be

The previous 30 articles are based on the contents of the book written, rarely have their own understanding, from this beginning to understand some of the internal rails mechanism, so understand more things, less code, this time we look at the Rails

File Upload (filecolumn) Web page: http://www.kanthak.net/opensource/file_column/ Installation: Http://opensvn.csie.org/rails_file_column/plugins/file_column Theme Support (Theme Support) Installation:

Why is Ruby on Rails for application development, like Apple on desktop OS? 1.Ruby on Rails is optimized first for people, and secondly for editors and frameworks; 2.Ruby on Rails provides a fairly attractive new choice for web development;

The third part, the permission design and the use of ACL plug-ins. The sense of this kind of permission design is also very mainstream. Next, look at how the eol.org is implemented in terms of the permissions design, or what plug-ins are used.

Ruby ranked 8th in this month's Tiobe index, the highest ranking since December 2008, and the peak is the opposite of the previous peak. The 2006 Ruby preacher shouted that Ruby would reach the top, advocating ruby and its programming environment

Ruby block, in my opinion, is inserting a variable function.block_name{ statement1 statement2 ..... }It doesn't seem to know what it is, but don't worry, keep looking down. Block function calls yield statement by yield the English is yielding,

Ruby Getting Started notesEverything is the object"Hello". LengthMethodDefinition: def start end endNaming generally uses underscores to separate wordsYou can embed an expression in a stringreturn value: A) return+ return value B) function The value

Https://ruby-china.org/wiki/install_ruby_guideHow to quickly and correctly install Ruby and rails runtime Environments For new entry-level developers, installing Ruby, Ruby gems, and rails running environments may be a problem. This section

Because the system was reinstalled, we tried to use rvm to install and manage Ruby and rails and record the installation process.   Install curl first    Shell code $ Sudo apt-Get install curl   Because the rvm Installation File is obtained from

Test the Cluster of Redis Cluster on Windows to fill in the note, redisclusterFor the principle of redis cluster implementation, see the http://www.tuicool.com/articles/VvIZje cluster environment requires at least three nodes. We recommend that you

Dual-equal sign = in ruby When I was writing code two days ago, I suddenly received a warning that the project code had an XSS vulnerability, So I immediately checked the Page code based on the reported URL, although it was fixed soon, in addition,

Ruby's 25 programming details (tips and practical code segments), ruby25 1. try will never throw an exception and return nil if there is noCopy codeThe Code is as follows:Province_id = Province. find_by_name (prov). try (: id) 2. The find (: first,:

Ruby string and array maximization problems, ruby Problems Max Method b=[1,3,55,777,2,4,6,8,0] For numeric data, max obtains the maximum value of the array, and min obtains the minimum value of the array. b.max => 777b.min => 0 It has no practical

The example explains how Ruby uses the decorator mode in the design mode, and the ruby design mode. OverviewIf you are engaged in object-oriented development, adding behavior to a class or object and using inheritance mechanisms, this is a basic