Changes for page Code Example: Data Structure Style vs. Object Style

Summary

• Page properties (1 modified, 0 added, 0 removed)

Details

Page properties

Content

...	...	@@ -60,11 +60,10 @@
60	60	}
61	61	}
62	62
63		-1. Adding a function Area() to GeometricObject Interface is hard since all classes implementing
64		-1. Adding a new datatype, Rectangle, is more difficult because it requires touching existing code, namely any functions like Circumference() or Area() that need to be enabled handle this datatype.
	63	+1. Adding a function Area() to the GeometricObject interface is hard because it requires touching existing code, namely extending all Square and Circle classes with the new function.
	64	+1. Adding a new datatype, Rectangle, is easy because only new code is added, namely a Rectangle class.
65	65
66	66	### Conclusion
67	67
68		-asd
69		-
70		-
	68	+* The lesson learned here is that data structures are easy to extend with functions, and objects are easy to extend with data types.
	69	+* Although the difference between the two styles may seem insignificant in this simplified example, it has serious implications in complex production codebases with multiple data types and behaviors.