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

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

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...	...	@@ -5,26 +5,24 @@
5	5	}
6	6
7	7	type Circle struct {
8		- radius float
	8	+ length float
9	9	}
10	10
11		- func Circumference(g Object) float {
12		- switch type(g):
13		- case Square:
14		- return 4 * g.length
	11	+ func Area(g GeometricObject) float {
	12	+ switch (g.type()):
15	15	case Circle:
16		- return 2 * PI * g.radius
	14	+ return
	15	+ case Square:
	16	+ return ...
17	17	}
	18	+
	19	+ func Circumference(g GeometricObject) float {
	20	+ ...
	21	+ }
18	18
19		-*
20		-
21	21	#### Object-Oriented Style
22	22
23		- interface GeometricObject {
24		- Circumference() float
25		- }
26		-
27		- class Square implements GeometricObject {
	25	+ class Square {
28	28	length float
29	29
30	30	constructor(length float) {
...	...	@@ -31,12 +31,16 @@
31	31	this.length = length
32	32	}
33	33
	32	+ func Area() float {
	33	+ return this.length * this.length
	34	+ }
	35	+
34	34	func Circumference() float {
35	35	return 4 * this.length
36	36	}
37	37	}
38	38
39		- class Circle implements GeometricObject {
	41	+ class Circle {
40	40	radius float
41	41
42	42	constructor(radius float) {
...	...	@@ -43,6 +43,10 @@
43	43	this.radius = radius
44	44	}
45	45
	48	+ func Area() float {
	49	+ return PI * this.radius * this.radius
	50	+ }
	51	+
46	46	func Circumference() float {
47	47	return 2 * PI * this.radius
48	48	}