Ruby

CodeAs follows: Copy codeThe Code is as follows: require 'date' Day = date. New (2008, 2,-1)End_of_month = day. strftime ('% D'). to_ IYear_and_month = day. strftime ('% Y % m ')For today in 1 .. end_of_month doP sprintf ('% S % 02d',

Ruby Code Copy code The Code is as follows: if @ user. update_attributes (: Password => Params [: User] [: Password]) Flash [: Notice] = 'password changed successfully' Redirect_to: Action => 'index' Else Redirect_to: Action => 'change _ pass',:

We always want to classify unknown events. When it happens, pass a piece Code Is the easiest solution, that is, we want to process code like processing data. A new process object can be created through proc: Ruby> quux = proc {| Print

There are not many Ruby books. I have collected these books from the Internet. Download them and click images. Programming Ruby, Second Edition: getting started with Ruby, Version 2, required for learning Ruby

After reading Ruby for a few days, I found many well-known syntax features in C #. Ruby was available a few years ago: 1. The Params keyword in C # Class program {static void main (string [] ARGs) {console. writeline (sum (); console. writeline (

1. Open and read files File = file. Open ("cnblogslink.txt") file. Each {| Line | print "# {file. lineno}.", line} file. Close Output: 1.Community 2. News 3. Community 4. News 5. Recruitment 6. Bo Wen 7. Group8. Flash9. Network

Get the currently running method name in Ruby on bigbold Code Fragment: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Module KernelPrivate Def This_method_nameCaller [0] = ~   / '

Complained todayThe blog has not been updated for many days, which affects reading mood. I just need to start it. ^_^ # Part One Afile = file. New ("C: \ 1.txt"," W ") Afile. Puts "The 1" Afile. Puts "The 2" Afile. Close   # Part Two

What is jruby? Jruby is a Ruby interpreter implemented in pure Java. Through jruby, you can directly run Ruby on JVMProgramTo call the Java class library. Many Ruby ides written in Java use jruby to explain the syntax. Jruby, an open-source Ruby

Ruby processes strings like numbers. We enclose them with single quotation marks ('...') or double quotation marks. Ruby> "ABC""ABC"Ruby> 'abc'"ABC" Single quotation marks and double quotation marks have different functions in some cases. A

Now let's take the previous examples Program Of Code Let's take a look. The following example is shown in the simple example section. Def fact (N)If n = 01ElseN * fact (n-1)EndEndPrint fact (argv [0]. to_ I), "\ n" Because this is the

The new version of will_paginate has abandoned this practice and switched to the Gem method. This article builds an application named foobar to understand the usage of will_paginate. ==================================== C: \> rails foobar-D

1. send messages to the object We can directly send messages to objects: Ruby Code Copy code The Code is as follows: Class helloworld Def say (name) Print "hello,", name End End HW = helloworld. New HW. Send (: Say, "world ") We usually use HW.

It can be divided into the following sections: · Basic implementation · Reference the original object in the iteration, or directly change the value of the array instead of returning a new array · Input infinite parameters to Iteration ·

You may have noticed that in our previous code, the database definition uses an integer field id as the primary key, which is a convention of Active Record. Maybe you have to ask, why don't we use order numbers or a meaningful column as the

The Ruby pp () function can be used to output arrays in a very beautiful way. However, the disadvantage is that the two-dimensional array is displayed on one row. We want it to be output in the form of a subarray per row, as shown in Is it more

The String in Ruby is mutable, unlike the String in java and C # is immutable. For example Copy codeThe Code is as follows: str1 = "abc" Str2 = "abc" In java, for literal strings, the jvm maintains a table internally. Therefore, in java, str1 and

Git repository outputGit archive -- format = tar -- prefix = actasfavor/HEAD | (cd/home/holin/work/& tar xf -)Output to the/home/holin/work/actasfavor/directory Posted by holin At May 16,200 8Load controller and model in plugins # Include hook code

To install Ruby, go to the Ruby official website to download the Windows Installation Package of Ruby1.56. After installing ruby, open the Dos window and enter Ruby-v to display it.Ruby 1.8.6 (patchlevel 0) [i386-mswin32] indicates that Ruby has

The String in Ruby is mutable, unlike the String in java and C # is immutable. For exampleCopy codeThe Code is as follows:Str1 = "abc"Str2 = "abc" In java, for literal strings, the jvm maintains a table internally. Therefore, in java, str1 and str2