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

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...	...	@@ -1,61 +1,59 @@
1		-asd
	1	+### Use Cases
2	2
3		-```
4		-type Square struct {
5		- length float
6		-}
	3	+This example is intended to demonstrate the extensibility differences between data structures and objects by extending them with
7	7
8		-type Circle struct {
9		- length float
10		-}
	5	+1. an Area() function (extending behavior)
	6	+1. a rectangle type (extending data type)
11	11
12		-func Area(g GeometricObject) float {
13		- switch (g.type()):
14		- case Circle:
15		- return
16		- case Square:
17		- return ...
18		-}
	8	+### Data Structure Style
19	19
20		-func Circumference(g GeometricObject) float {
21		- ...
22		-}
23		-```
	10	+ struct Square {
	11	+ length float
	12	+ }
	13	+
	14	+ struct Circle {
	15	+ radius float
	16	+ }
	17	+
	18	+ function Circumference(g Object) float {
	19	+ switch type(g):
	20	+ case Square:
	21	+ return 4 * g.length
	22	+ case Circle:
	23	+ return 2 * PI * g.radius
	24	+ }
24	24
25		-asd
	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.
26	26
27		-```
28		-# Object-Oriented Style
	29	+####
29	29
30		-class Square {
31		- length float
	31	+#### Object-Oriented Style
32	32
33		- constructor(length float) {
34		- this.length = length
35		- }
36		-
37		- func Area() float {
38		- return this.length * this.length # Formula for square area: side^2
39		- }
40		-
41		- func Circumference() float {
42		- return 4 * this.length # Formula for square circumference: 4 * side
43		- }
44		-}
45		-
46		-class Circle {
47		- radius float
48		-
49		- constructor(radius float) {
50		- this.radius = radius
51		- }
52		-
53		- func Area() float {
54		- return 3.14159 * this.radius * this.radius # Formula for circle area: πr^2
55		- }
56		-
57		- func Circumference() float {
58		- return 2 * 3.14159 * this.radius # Formula for circle circumference: 2πr
59		- }
60		-}
61		-```
	33	+ interface GeometricObject {
	34	+ Circumference() float
	35	+ }
	36	+
	37	+ class Square implements GeometricObject {
	38	+ length float
	39	+
	40	+ constructor(length float) {
	41	+ this.length = length
	42	+ }
	43	+
	44	+ func Circumference() float {
	45	+ return 4 * this.length
	46	+ }
	47	+ }
	48	+
	49	+ class Circle implements GeometricObject {
	50	+ radius float
	51	+
	52	+ constructor(radius float) {
	53	+ this.radius = radius
	54	+ }
	55	+
	56	+ func Circumference() float {
	57	+ return 2 * PI * this.radius
	58	+ }
	59	+ }