• Home
• org.prompto
• WebSite
• 0.0.7
• source code
• category_methods_overriding.html

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

reference.language.category_methods_overriding.html Maven / Gradle / Ivy

    
    
    
    

    
    

    
    

    
    
    
    

    



    

        
Overriding category methods

        
When a category implements a method, it can be handy to override that method in derived categories.
        
This is done simply by providing inside the derived category definition a new version of the method defined in the parent category.
        
In the below example, we:
        

        
define an 'Animal' category with a 'speak' method
        
define an 'Dog' category, derived from 'Animal', which overrides the 'speak' method
        
define an 'Cat' category, derived from 'Animal', which overrides the 'speak' method
        
call the 'speak' method for an instance of each of them