Ruby

Discover SharpDevelop also supports Ruby, especially if you can directly use the WinForm control directly in the require"mscorlib"require"System.Windows.Forms, version=2.0.0.0, culture=neutral, publickeytoken=b77a5c561934e089"require"System.Drawing,

Ruby InstallationInstalling Ruby from source code under Windows is a very hard errand that can be http://rubyinstaller.org/from theor http://railsinstaller.org/ download the packaged installer. Ruby Configuration Configuring environment

1. Ruby's most powerful web framework Ruby on Rails. So you can install Railsinstaller directly.Address: http://www.railsinstaller.org/en. The installation process is checked by default to add an environment to path.2. Change the gem image to http://

Puts "Please input Number1:" #提示输入第一个数number1 =gets# Save the first number puts "please input a operator (+,-, *,/):" Op=getsputs "in Put Number2: "Number2=getscase op.chomp# performs the corresponding operation according to the operator when" +

According to "Ruby on Rails" and I learned the route map, we know that can be accessed GET /posts/ :id (. :format ) to display specific objects.1. Modify the actionModify the APP/CONTROLLERS/POSTS_CONTROLLER.RB show this action. Here's a puzzle,

Language itselfThe Ruby language supports syntax-level systems, frameworks, and even language-based methods for replication, commonly called meta-programming (meta-programming), on top of which are terminology mixin, dynamic definition of methods,

Code blocks are more or less exposed in other languages, such as Perl sort{$a $b}keys, the incoming code block is sorted by value, the closure is used in swift, further learning training closure, capturing The code style, such as value, has a deep

650) This. width = 650; "src =" http://s3.51cto.com/wyfs02/M02/4D/4E/wKiom1RPRi2DByI3AABxsZFNOH4994.jpg "style =" float: none; "Title =" qq20141028153200.png "alt =" wkiom1rpri2dbyi3aabxszfnoh4994.jpg "/> 650) This. width = 650; "src =" http://s3.51

Ruby-inherited syntax class DerivedClass Override Concept Sometimes, we want child classes to inherit from the parent class to do different things from the parent class, so we need to rewrite the method in the Child class. For example, you have a

Sometimes, when you look at the source code, you can see that there is a The parent class of the class is module, module. Methods. grep (/   The matched result set is: [: , E. gMoD Returns true ifMoDIs a subclassOther. ReturnsnilIf there's no

Encoding: undefinedconversionerror in productscontroller # create "\ xFF" from ASCII-8BIT to UTF-8 When uploading a photo using ruby1.9.3, this error is reported. File. Open ("# {rails. Root}/APP/assets/images/" + new_name, "W") {| file | File.

Ruby basic data types: ruby Data Types Generally, the basic data types in ruby are all class types, which provide a concise writing method for the basic data types for ease of writing and reading. I. numeric type The integer type can be binary,

Parsing of MVC structure data transmission in Ruby on Rails, railsmvc If you have already developed a Rails-based application but are still confused about the data transmission between MVC, congratulations! This article is just to summarize the

Basic Process Control and basic Ruby knowledge process (1) condition judgmentCondition judgment is the basic formula:Copy codeThe Code is as follows:If expressionCodeEndIf the expression is not false or nil, the code part can be executed. For else,

Five variables in Ruby and five types of ruby Ruby global variables The global variable starts with $. If the value of the uninitialized global variable is nil, a warning is generated after the-w option is used. Assigning a value to a global

Range object learning notes and rubyrange learning notes in Ruby Range is a class of Range objects. You can use the Range operator ".. "or"... ","... "The generated range object includes the start and end points,"... "The generated range object does

Iiscnfg. vbs IIS configuration script, iiscnfg. vbsiis Import and Export All or selected elements of the local or remote computer Internet Information Service (IIS) configuration database, or configure the entire IIS (configure the database and

Ruby multi-thread programming A traditional program has a separate thread for execution. The statements or commands containing the program are executed sequentially until the program is terminated. A multi-threaded program has multiple threads for

Detailed description of case expressions in Ruby and rubycase expressions There are two forms of Ruby case expressions: The first form is similar to a set of continuous if statements: it allows you to list a set of conditions and execute the first

You can use Ruby to view the function source code in the command line. To view the source code of the update_attribute function of ActiveRecord, a common method is to search for def update_attribute directly in the Rails source code. The Pragmatic