Ruby

Modify viewsModify the index view (app/views/posts/index.html.erb) and add the edit link as follows:our blogs That is, add the following logic: Among them, Edit_post_path, is the previous "[Ruby on Rails] and I learned route map" referred to

1. Definition of similarityWe define, then, we set, then, | C|=s, then the similarity of p=,p (0,1)2. Design of similarity detection algorithmAlgorithm design:Defines 4 characters as a string, divides the t1,t2 into strings, and if the remaining

In Ruby rails, if you want to save a property (or read a property), and you want to do something else when you save the property (or read a property)You can use the method that overrides the property's setup or reader.For example, a models table has

Past Review Last time I talked about the installation configuration of vmwarevm and the installation of scientific Linux 6. x system. This time, our main task is to complete the configuration of the Ruby on Rails development environment on the

Http://rvm.io/rvm/install   Install RVM (development version):\curl -sSL https://get.rvm.io | bashWithout autolibs\curl -sSL https://get.rvm.io | bash -s -- --autolibs=read-failInstall RVM stable with ruby:\curl -sSL https://get.rvm.io | bash -s

The ruby environment is used for sass file compilation. Interface-based koala tools and command line modes cannot be used, which is really annoying. It is easy to see that Chinese comments cannot be compiled or garbled, and the solution after

Some Suggestions on Ruby on Rails routing configuration, rubyrails When you need to add one or more actions to a RESTful Resource (do you really need it ?), Use member and collection routes. # Differential get 'subscriptions/: id/unsubscribe

Rbenv is used to manage Ruby versions. rbenv is used to manage ruby versions. Rbenv is used to manage the installation and use of multiple versions of ruby in the user directory. It can be used with rvm. The specific differences between rbenv and

Example of the use of hundreds of semicolons and literal values in Ruby: ruby percent Use % () (abbreviated as % Q) for a single line string that requires interpolation and embedding double quotation marks ). Multi-line string, preferably heredocs.

A few Ruby tips and Ruby tips Sequential call of code blocksCopy codeThe Code is as follows:Def touch_downYield [3, 7]Puts "touchdown! "EndTouch_down do | (first_down, second_down) |Puts "# {first_down} yards on the run"Puts "# {second_down} yards

Multiple ruby traversal folder code instances collected, ruby instances 1. traverse all files in the folder and output file names Copy codeThe Code is as follows:Def traverse_dir (file_path)If File. directory? File_pathDir. foreach (file_path) do |

Use Ruby to write a simple tutorial for sending emails. SMTP (Simple Mail Transfer Protocol) is a Simple Mail Transfer Protocol. It is a set of rules used to send Mail from the source address to the destination address, which controls the Transfer

Ruby concise learning notes (2): class inheritance, attributes, class variables, and ruby learning notes 1. How to declare a subclassCopy codeThe Code is as follows:Class Treasure In this way, the property names and descriptions of Thing classes are

String object learning notes in Ruby, rubystring 1. String object definition You can use "" And ''to define String objects. For simple strings, you are advised to use'' to define them. The efficiency is higher than "". The difference between "" And '

Common jquery operations and jquery operations Page load Method $().ready(function() {}) Div hide operation // Whether the div hides function isHideMenu () {return $ ("# menuContent "). is (": hidden")} // hide divmainFrameset. hide (); // display

We all know that the expression operator has only one input value. This is common in C and Java. Today we will discuss the unary operator overloading in Ruby.Unary operators include: + -*! & Etc. To avoid confusion with the value +-, to overload the

I. String operations String Interpolation 1. # {}: Any valid Ruby Code placed in # {} will be evaluated and replaced with the evaluated result and inserted to the original location. 2. Differences between single quotes and double quotes: Double

It took nearly two years. After multiple test versions, Ruby On Rails 3.0 was officially released. Over 1600 developers participated in the development. With the joint efforts of everyone, Ruby On Rails 3.0 was "faster, stronger, and more beautiful".

Interpreting the usage of annotations in Ruby and interpreting ruby annotations The Code Annotated In the Ruby line is ignored at runtime. Single line comment # starts with the characters. They start from # To the end of the line as follows: #!

Ruby Array (Array) learning notes, rubyarray 1. array Definition Arrays in Ruby are dynamic arrays, And the stored data does not have to be of a limited type. The length of the array is dynamically extended according to the storage requirements.