Ruby Study Notes (4)-Dynamic Modification of class attributes

The most obvious feature of Dynamic Language is that the behavior/attribute of a class instance can be dynamically modified after the new version is released! I personally think this kind of processing is more in line with the real world than Java/C

Ruby obfuscators and code protection

Rubyencoder protects Ruby and Ruby on Rails files through compilation and encryption. The encrypted script is run by the rubyencoder loader. Rubyencoder is composedInovica LtdDeveloped. They also made a similar thing for PHP:Sourceguardian.

Infoq's interview with Matz, founder of Ruby

1: I'm Sadek drobi, I'm here at qcon with Matsumoto yukihiro. Matz, can you tell us what you 've ve been up to lately? Recently, I 've been working on the version 1.9, which is the Development version of Ruby, which is much faster than the stable

Keyword meanings in ruby

1,BreakJump out of layer Loop 2,NextIgnore the remaining part of this loop and start the next loop 3,RedoStart the loop again, or start from this time 4,RetryStart the loop body again 5. $ array 6,Attr_writer: Username is equivalentDef

Programming. Ruby Study Notes (Chapter 2 and Chapter 3)

Ruby processes single quotes and double quotes differently. (1) double quotation marks can be applied to escape characters (2) strings in double quotation marks can be replaced by # {varname}. For global variables or instance variables, the {}

Ruby constant Parsing

A constant starts with an uppercase letter. it should be assigned a maximum of once. in the current Ruby version, a constant value assignment only generates warnings rather than errors (non-ANSI eval. RB will not report this warning) Ruby> fluid

Ruby getting started page 1/5

I. Methods The 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

Ruby Exception Handling: Ensure

When a method ends, we may need to clean it up. maybe an open file needs to be closed, and the data in the buffer zone should be cleared. if there is always only one exit point for each method, we can safely clean up our CodePut it in one place and

Ruby on rails development from scratch ()-ActiveRecord BASICS (access attributes)

If a model object has an attribute named balance, you can use the index operator to obtain the value of this attribute. You can use a string or tag. Here we use a tag, for example: Account [: balance]#=>Get value Account [: balance] = 0.0#=>Set

Ruby on rails development from scratch (windows) (13)-Order (Order)

In the last content, we wrote the CHECKOUT processing. This time, we will display the shopping cart and order on a page, so that users can easily see their shopping situation when placing orders.   1. to modify the checkout. rhtml file, add the

The ruby program processes the HTML editor and only keeps content similar to UBB.

# Encode the string by UBBDef ubb_encode (source_str)Source_str.scan (/ /) Do | v |If v. match (/src = ["']. *? ["']/)! = NilSource_str = source_str.sub (v, '[img' + v. match (/src = ["']. *? ["']/) [0] +'/] ')EndEndSource_str.scan (/ /) Do | span

Use rvm to install ruby and rails on Mac

1. If Git is not installed, go to http://code.google.com/p/git-osx-installer/to download and install it. 2. Install RVM and run the following command to install it: Shell code.Bash

Ruby module Win32API calls win32API directly

Ruby has powerful functions. The Ruby module Win32API we will introduce here is an additional library in the Ruby language. It can help us call Win32API directly. Example of Ruby code for getting the current class name Ruby module OpenURI to get

Ruby thread Knowledge Point Analysis

Ruby is a fully object-oriented interpreted scripting language. For such a new programming language, its features are very attractive to programmers. Let's take a look at the concepts related to Ruby threads. How to call win32ole IN Ruby Ruby

Analyze rudy Access Control

Previously, we mentioned that Ruby has no functions, but only methods. There are actually more than one method. In this section, we will introduce access control (access controls ).Think about what happens when we define a method in the "highest

Ruby real variables

A real variable starts with @ and Its range is limited to the self object. two different objects can have real variables with different values even if they belong to the same class. from outside the object, real variables cannot be changed or even

Ruby constant Parsing

A constant starts with an uppercase letter. it should be assigned a maximum of once. in the current Ruby version, a constant value assignment only generates warnings rather than errors (non-ANSI eval. rb will not report this warning)Ruby> fluid = 303

Ruby on rails code skills

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

What is ruby and Ruby Overview

Ruby is a powerful object-oriented scripting language that allows you to easily and quickly perform object-oriented programming. sometimes using formal object-oriented languages such as Smalltalk, Eiffel, and C ++ to develop small projects seems a

Ruby file information output instance code

DEMO code:[Code]#! /Usr/bin/env rubyCOUNT = 10Require 'benchmark'$ Account_chars = ('A' .. 'Z'). to_a.delete_if {| c = ~ /[AEIOUY]/}# $ Password_chars = ('0'... '9'). to_a$ Password_chars = Array. new$ Password_chars [0 .. 9] = ('0'... '9'). to_a$

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