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

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...	...	@@ -1,21 +8,14 @@
1		-### Use Cases
2		-
3		-This example is intended to demonstrate the extensibility differences between data structures and objects by extending them with
4		-
5		-1. an Area() function (extending behavior)
6		-1. a rectangle type (extending data type)
7		-
8	8	### Data Structure Style
9	9
10		- struct Square {
	3	+ type Square struct {
11	11	length float
12	12	}
13	13
14		- struct Circle {
	7	+ type Circle struct {
15	15	radius float
16	16	}
17	17
18		- function Circumference(g Object) float {
	11	+ func Circumference(g Object) float {
19	19	switch type(g):
20	20	case Square:
21	21	return 4 * g.length
...	...	@@ -23,11 +23,8 @@
23	23	return 2 * PI * g.radius
24	24	}
25	25
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.
	19	+*
28	28
29		-####
30		-
31	31	#### Object-Oriented Style
32	32
33	33	interface GeometricObject {