This document provides examples of how to perform common tasks in Ruby and Ruby on Rails using less code compared to other languages like C#. It begins with an overview of Ruby's simplicity and complexity. Several examples are given that show how to create hashes, print output, build binary trees, define classes and modules, call methods, perform calculations, sort and select data, define instance behaviors, and include modules. The document concludes by providing examples of generating a basic Twitter clone app in Rails and scaling it up.
Basic introduction to the history and uses of the Ruby programming lanaguage. http://github.com/jwthompson2/barcamp-nola-2009/
This document provides an overview of Ruby for Java developers, covering the history and culture of both languages, their technical backgrounds, key differences in their languages and frameworks, and how Ruby on Rails works. It demonstrates Ruby concepts through examples and concludes with a discussion on performance and common use cases for each language.
Ruby is an object-oriented scripting language that is dynamically typed and supports duck typing. It was created in the 1990s by Yukihiro "Matz" Matsumoto and has gained popularity through its use in web frameworks like Ruby on Rails. This document provides an overview of the Ruby language, including its history, basic syntax like strings and methods, core data types, control structures, classes and inheritance. It also discusses tools used by Ruby developers like RubyGems, interactive Ruby shells, and practical applications of Ruby for web development, testing, and automation through scripting. Finally, it mentions the international Ruby community and local user groups.
This document discusses how Vim can improve productivity for Perl coding. It provides examples of using Vim motions and modes like Normal mode, Insert mode, and Visual mode to efficiently edit code. It also covers Vim features like syntax highlighting, custom syntax files, key mappings, and text objects that are useful for Perl. The document advocates that Vim is a powerful editor rather than an IDE and highlights how it can save significant time compared to less efficient editing methods.
Roles are an excellent object-oriented tool both for allomorphism and for reuse. Roles facilitate allomorphism by favoring "does this object do X" versus "is this object a subclass of X". You often care more about capability than inheritance. In a sense, roles encode types better than inheritance. Roles also provide an excellent faculty for reuse. This effectively eliminates multiple inheritance, which is often the only solution for sharing code between unrelated classes. Roles can combine with conflict detection. This eliminates accidental shadowing of methods that is painful with multiple inheritance and mixins. Parameterized roles (via MooseX::Role::Parameterized) improve the reusability of roles by letting each consumer cater the role to its needs. This does sacrifice some allomorphism, but there are ways to restore it.
an introduction to ruby programming language. This is a start for peoples those who start ruby on rails
This document provides an overview of the Ruby programming language, including its history, philosophy, characteristics, applications, culture, syntax, built-in types, classes and methods, accessors, control flow, including code, modules, metaprogramming, web frameworks, web servers, shell scripting, testing, JRuby, and calling between Java and Ruby.
The document provides an overview of Ruby on Rails and its key components. It discusses how Rails is made up of several gems including Rails, ActiveSupport, ActionPack, ActiveRecord, ActiveResource and ActionMailer. It summarizes the purpose and functionality of each gem. For example, it states that ActiveRecord connects classes to database tables for persistence, while ActionPack handles routing, controllers and views.
Updated version of talk "Javascript the New Parts". I gave this at JsDay on May 12th 2011. I updated with latest stats and improved es5 coverage, most notably strict mode. Abstract: At last, ecmascript 5th edition is landing in all modern browsers. What are the new parts of the language and how can they help us to write better code? Also http://federico.galassi.net/ http://www.jsday.it/ Follow me on Twitter! https://twitter.com/federicogalassi
In this presentation we look at the similarities and differences that a PHP developer will want to keep in mind when adding Rails to their toolbox.
This document provides an overview of the Ruby programming language. It introduces basic Ruby concepts like variables, data types, flow control, classes and objects. It also discusses tools and frameworks like Rails, gems, and testing. The document encourages learning Ruby and provides resources to get started, including trying an interactive tutorial and installing a development environment. It emphasizes that Ruby is fun and easy to learn.
Perl provides many powerful features and modules that allow developers to customize and extend the language. Some popular modules include Moose for object-oriented programming, TryCatch for exception handling inspired by Perl 6, and P5.10 features that backport Perl 6 functionality. While useful, some features like autoboxing and state variables could introduce subtle bugs if misused. Overall, Perl's extensibility makes it a very flexible language that can be adapted to many different use cases.
Part of a series of talk to help you write your first Perl 6 program today. So its basic syntax and concepts of its object orientation and a comparison to the widely used P5 OO system Moose which is similar by no accident.
The slides presented during the BDZ Meetup about Kotlin held in Bologna on October 21th, 2017 by Marco Vasapollo (ceo@metaring.com)
Take a dive into JavaScript prototypes from the perspective of constructor functions. Originally given at Charlotte JS on June 18, 2015.
This document provides an introduction to Ruby on Rails, including: - An overview of the Model-View-Controller framework and REST architecture that Rails is built on - Examples of basic Rails concepts like ActiveRecord and routing - A "Hello World" example using the Ruby language - Explanations of key Ruby concepts like blocks and duck typing
This document discusses the meta-programming and code generation capabilities of the Ruby on Rails framework. It describes how Rails uses conventions to generate common code structures like models, controllers and views. It also explains how Rails dynamically generates methods at runtime based on attributes in database tables to provide an intuitive ORM layer. The document states that this level of convention and automation allows developers to be highly productive by focusing on domain logic rather than boilerplate code.
The document provides examples of how to perform common programming tasks in Ruby and Ruby on Rails compared to other languages like C#. It shows how Ruby and Rails allow doing more with less code through features like hashes, object oriented programming, metaprogramming, and the MVC framework. The examples include creating hashes, binary trees, class hierarchies, adding methods to numbers, and defining behavior for different instances. It also provides a Rails example for a Twitter clone app and lists resources for learning Ruby and Rails.
This document provides an overview of mocks and stubs in testing, using Ruby and RSpec examples. It establishes common terminology around mock objects, shows appropriate uses of mocks such as defining interfaces and simulating situations, and demonstrates abuses such as modifying the subject under test and creating "mock trainwrecks" that tie specs too tightly to implementation details. The goal is to understand best practices for using mocks to write clear, maintainable tests.
Apple's Swift has achieved the top place in Stack Overflow's "Most Loved" list of programming languages in its 2015 Developer Survey. Based on information gleaned from GitHub and Stack Overflow, analyst firm RedMonk has seen Swift's popularity ranking soar from 68 to 22 in an unprecedented 6 months. The "Extreme Swift" event does not require advanced, or even any, knowledge of Swift. Learn about some of the more outrageous features of the language which help explain what the fuss is all about! Never look at programming the same way again — even if you never end up writing a single line of Swift code in your life.
Ruby is a dynamic, open source programming language that is interpreted, object-oriented, and functional. It focuses on simplicity and emphasizes programmer productivity. Ruby on Rails is a web application framework built on Ruby that follows the model-view-controller architectural pattern. It aims to make web development faster and easier through its conventions, including generating scaffolding for basic CRUD operations on models.
Put on by USC's Upsilon Pi Epsilon as part of Wonderful World of Web2.0 Workshop Series. http://pollux.usc.edu/~upe/
- Ruby is an interactive, object-oriented programming language created by Yukihiro Matsumoto in 1995. - Ruby on Rails is a web application framework built on Ruby that emphasizes convention over configuration and is optimized for programmer happiness. - The document discusses Ruby and Ruby on Rails, providing an overview of their history, key principles like MVC, REST, and conventions used in Rails. It also provides examples of modeling data with classes and ActiveRecord in Rails.
This document provides instructions for Lab 4 of an information systems design course. The lab aims to build experience with fundamental PHP functions related to arrays, strings, and regular expressions. Students will modify PHP code snippets to work with multi-dimensional arrays, define and call functions, and perform string operations like searching and replacing text. The lab consists of 4 steps involving PHP code to demonstrate various PHP features and concepts.
This document provides instructions for Lab 4 of an information systems design course. The lab aims to build experience with fundamental PHP functions related to arrays, strings, and regular expressions. Students will modify PHP code snippets to work with multi-dimensional arrays, define and call functions, and perform string operations like searching and replacing text. The lab consists of 4 steps involving PHP code to demonstrate various language features like joining strings, defining functions, and using regular expressions.
The document discusses using the Ring programming language to develop web applications through CGI (Common Gateway Interface). It covers configuring the Apache web server to support Ring CGI files, writing a basic "Hello World" CGI program in Ring, and using the Ring Web Library to simplify CGI development. Examples are provided that demonstrate generating HTML forms and handling HTTP GET requests to retrieve submitted form data. The Web Library features templates, file uploads, and MVC patterns to help structure full-featured web applications in Ring.
Python and Perl are both popular scripting languages that are interpreted, general purpose, and support multiple programming paradigms. While they have similar capabilities, Python emphasizes readability and has a stronger community around its development. Python also has a large standard library and is used in many popular projects. However, Python is still working through issues related to the transition from Python 2 to Python 3.
Overview of Trampoline Objects in Perl with examples for lazy construction, lazy module use, added sanity checks. This version includes corrections from the original presented at OSCON 2013 and comments.
Object Oriented Programming Using C++: C++ Namespaces
The document discusses Ruby testing tools including Rake for building tasks, RSpec for behavior-driven development testing, and Webrat for web application testing. It provides examples of using Rake to define tasks for compiling Flex applications, examples of RSpec tests for methods like factorial and prime?, and an example Webrat test for creating a CEO letter campaign. Links are also included for the Rake, RSpec and Webrat documentation.
This document provides an introduction to the Ruby programming language. It discusses Ruby's object-oriented nature, dynamic typing, syntax similarities to other languages like Java and C#, and the ease of learning Ruby. It also demonstrates simple Ruby code examples for arrays, hashes, classes, inheritance and modules. Testing practices like TDD (test-driven development) are emphasized. Popular Ruby web frameworks like Ruby on Rails, Sinatra and libraries like HAML and SASS are also introduced.
A presentation given at DevNation 2015 (Boston) of a prototype library that leverages Java Lambda Expressions to manage data on MongoDB.
The document discusses object-oriented programming in Ruby. It introduces some key concepts in OOP like classes, objects, identity, state, and behavior. It also covers Ruby-specific paradigms like modules and mixins. Some common design patterns are mentioned like singleton, iterator, and decorator. The document provides examples to illustrate concepts like inheritance, polymorphism, and visibility in modules.
Schematics allow developers to define rules that transform a file system tree representation. They provide a workflow tool for scaffolding new components and services as well as updating existing code. The Angular CLI uses schematics under the hood to provide its functionality. Developers can build their own schematics to customize workflows by defining rules that apply transformations to a tree representation of files.
Ruby is a dynamic, open source programming language that can be used to build web applications. It uses the MVC pattern for organizing applications into models, views, and controllers. The Rails framework is built on Ruby and provides conventions for building database-backed web applications rapidly. Ruby code can also be used to encrypt PE files by adding a decryption stub section and adjusting the entry point address in the PE header. While Ruby code is easy to read and maintain, performance can sometimes be slower compared to other languages.
The document provides an overview of several C++ concepts including basic syntax, compiling programs, argument passing, dynamic memory allocation, and object-oriented programming. It demonstrates simple C++ programs and functions. It discusses best practices like separating interface and implementation using header files. It also introduces C++ standard library features like vectors and the importance of avoiding unnecessary copying.
The document provides information about using Ruby gems. It discusses installing rubygems with "sudo apt-get install rubygems", then installing specific gems like git with "gem install git". It provides an example of using the git gem to log commits between two versions. It also briefly mentions HAML, SASS, HPricot, RSpec, Cucumber, and OmniAuth gems.
This document discusses options for building static sites in Ruby. It outlines pros of using Jekyll, such as being well-known and having many plugins, but notes some missing features like asset precompilation and LiveReload. Alternatives to Jekyll are presented, including Middleman and using Sinatra for semi-static sites. The document concludes by thanking the audience.