August 2022
Intermediate to advanced
469 pages
8h 13m
English
To explain this pattern, I’m going to jump into an example first and then discuss the pattern itself. Hope you don’t mind! Suppose you have parsed a mathematical expression (with the use of the Interpreter pattern, of course!) composed of double values and addition operators, for example:
(1.0 + (2.0 + 3.0))
This expression can be represented using an object hierarchy similar to the following:
public abstract class Expression { /* nothing here (yet) */ }
public class DoubleExpression : Expression
{
private double ...
