- 30 October 2016
- Patterns Design
- Ruby - Factory Method pattern
- 23 October 2016
- Patterns Ruby Design
- Ruby - Dependency Injection
Hi there. Today we will discover Dependency Injection (DI). To understand all benefits of dependency injection we should understand why dependencies are bad.
- 09 October 2016
- Patterns Ruby Design
- Ruby - Strategy Pattern
- 07 October 2016
- Patterns Ruby Design
- Decorator pattern and usage of SimpleDelegator
Recently I wrote about template pattern. Today I would like to talk about another useful pattern - decorator.
- 04 October 2016
- Patterns Ruby Design
- Inheritance and template pattern - simple example
Today I would like to show by simple example how to use template pattern in Ruby.
I'm sure you will find many ways of using that pattern in your application.
- 30 September 2016
- Patterns Ruby
- Tell, Don't Ask principle in Object-Oriented Programming
There is a great principle in object-oriented programming which says: "Tell, Don't Ask".
This principle tells that we should not ask object about their state, make decision and only then tell them what to do. Rather we should send commands.
There is a good quote about that: