helmutkian

This is an example of using ReactJs to render a force directed network graph. D3 performs all the positional calculations for each node and React handles rendering.

helmutkian

Mixin classes in CLOS are very similar to abstract base classes or interfaces in other object-oriented languages. Like interfaces in Java, they circumvent many of the issues associated with multiple-inheritence.

Imagine a senario in which one is tasked with building a platform-independent GUI framework. At the top of the widgit hierarchy sits a mixin WIDGIT-MIXIN:

(defclass widgit-mixin () ())

helmutkian

public interface TextBoxFactory {
    
    public TextBox TextBox makeTextBox();
}


public abstract class TextBox {