Ruby

1. Japanese to UTF-8Differences between iconv. New ('cp932', 'utf-8') and iconv. New ('shift _ JIS ', 'utf-8') Iconv. New ('shift _ JIS ', 'utf-8') does not support the following formats: When bytes 001-18 xxxxxxx, you can only replace the bytes

The behavior of an object depends on its class, but we often know that a specific object requires a specific behavior. in many languages, we have to get into the trouble of defining another class, even if it is only used for the next ing. in Ruby,

Object-oriented It is a confusing wording. object orientation makes others think you are fashionable. ruby claims to be an object-oriented scripting language, but what exactly is "Object-Oriented "? We already have a variety of answers, but all

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: CopyCode The Code is as follows: def fact (N) If

You can create an array by listing elements in square brackets and separating them with commas (,). The ruby array can adapt to different object types. Ruby> ary = [1, 2, "3"][1, 2, "3"] Just like the string mentioned above, Arrays can be

# Scanweb. Rb # Use Ruby scanweb. RB www.jb51.net to save the current result in c: \ 1.txt Require 'net/http'Filename = file. New ('C: \ 1.txt ', "W + ")If $ * [0] = NilPuts "hehe, no URL entered"ElseH = net: http. New ($ * [0], 80)Resp, Data =

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

Demo Code : [Code] #! /Usr/bin/ENV Ruby Count = 10 Require 'benchmark' $ Account_chars = ('A' .. 'Z'). to_a.delete_if {| c | C = ~ /[Aeiouy]/} # $ Password_chars = ('0'... '9'). to_a $ Password_chars = array. New $ Password_chars [0 .. 9] = ('0'...

For example, consider the following regular expression that matches the date:Copy codeThe Code is as follows: // \ ((? : 19 | 20) [0-9] {2}) [\-\/.] (0 [1-9] | 1 [012]) [\-\/.] (0 [1-9] | [12] [0-9] | 3 [01]) \ z/After Re is used, regular

Because I just learned rails, I tried to create a small system to operate a public account, After the deployment, I encountered a problem. The whole system was very slow to access on the Internet, but the access on the mobile phone was 10 seconds

First, ckeditor must be based on paperclip and then paperclip. You need to install ImageMagick in linux. Specific installation can refer to the http://my.eoe.cn/guanmac/archive/5806.html   Then there will be a problem in the China Region: culture,

A vulnerability hostname check bypassed was found in the OpenSSL implementation binding version of Ruby. This vulnerability is caused by incorrect parsing of null bytes in the X509 name, which can be placed by attackers"Www.ruby-lang.org \

Ruby is currently the most flexible and agile programming language. It has special application methods and can bring a pleasant programming environment to programmers. Here we will learn the skills for Ruby to get the current class name. Using pp (

Although the Ruby language is a simple programming language, it also has the function of program encryption. Here we will illustrate the Ruby encryption method with several code examples. Ruby function pointer concepts Ruby Rmagick Installation

Classes and objects in Ruby are important knowledge points. To learn the Ruby language, you must first master the application of Ruby objects and classes. Here we will learn about the Ruby core class. Ruby blocks provides flexible encoding methods

The first browser version of Ruby 1.9.3 has been released. It is a reference version that may contain bugs, but these bugs will be fixed in the next version of Ruby 1.9.3-p0. Improvements in this version since 1.9.2 include: 1. License change:

In daily life, we classify all objects at a certain level. we know that all cats are mammals, and all mammals are animals. small classes from largerClass. If all the mammals want to breathe, then the CAT also needs to breathe.In Ruby, we can express

The Code is as 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',

Bkjia.com May 18 Internet headlines] Over the past two weeks, I have been searching for methods that can further improve the UI performance. The main result is to return the correct HTTP status code, the browser cache function is optimized. BKJIA

I. MethodsThe Ruby method definition allows you to set default values for parameters. However, parameters without default values (* and &) cannot be followed by parameters with default values &), that is to say, the following method definition is