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

Summary

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

Details

Page properties

Content

...	...	@@ -7,17 +7,15 @@
7	7
8	8	### Data Structure Style
9	9
10		- interface GeometricObject {}
11		-
12		- class Square implements GeometricObject {
	10	+ struct Square {
13	13	length float
14	14	}
15	15
16		- class Circle implements GeometricObject {
	14	+ struct Circle {
17	17	radius float
18	18	}
19	19
20		- function Circumference(g GeometricObject) float {
	18	+ function Circumference(g Object) float {
21	21	switch type(g):
22	22	case Square:
23	23	return 4 * g.length
...	...	@@ -25,8 +25,8 @@
25	25	return 2 * PI * g.radius
26	26	}
27	27
28		-1. Adding an Area() function with a very similar anatomy to Circumference() is easy because it only requires adding new code.
29		-1. Adding a new datatype, Rectangle, is harder because it requires touching existing code, namely any functions like Circumference() or Area() that need to be enabled handle this datatype.
	26	+1. Adding a function Area() with the same anatomy as Circumference() is easy, since it only requires adding new code.
	27	+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.
30	30
31	31	####
32	32
...	...	@@ -59,12 +59,3 @@
59	59	return 2 * PI * this.radius
60	60	}
61	61	}
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.
65		-
66		-### Conclusion
67		-
68		-asd
69		-
70		-