1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// main.swift
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2016 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
//
// -----------------------------------------------------------------------------
protocol PointUtils {
func sumOfCoordinates () -> Float
}
struct Point2D : PointUtils {
var x : Float
var y : Float
init (_ _x : Float, _ _y : Float) {
x = _x;
y = _y;
}
func sumOfCoordinates () -> Float {
var sum = x + y
return sum
}
}
class PointSuperclass {
var superData: Int = 17
}
class Point3D : PointSuperclass, PointUtils {
var x : Float
var y : Float
var z : Float
init (_ _x : Float, _ _y : Float, _ _z : Float) {
x = _x;
y = _y;
z = _z
}
func sumOfCoordinates () -> Float {
var sum = x + y + z
return sum
}
}
func takes_protocol(_ loc2d : PointUtils,_ loc3d : PointUtils,
_ loc3dCB : AnyObject & PointUtils,
_ loc3dSuper : PointSuperclass & PointUtils
) {
let sum2d = loc2d.sumOfCoordinates()
let sum3d = loc3d.sumOfCoordinates()
let sum3dCB = loc3dCB.sumOfCoordinates()
let sum3dSuper = loc3dSuper.sumOfCoordinates()
print("hello \(sum2d) \(sum3d) \(sum3dSuper)") // Set breakpoint here
}
func main() {
var loc2d = Point2D(1.25, 2.5)
var loc3d = Point3D(1.25, 2.5, 1.25)
takes_protocol (loc2d, loc3d, loc3d, loc3d)
}
main()
|
