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Enumerations

L1

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Enums1.swift
#!/usr/bin/env swift;
import Foundation
import Utils

enum CompassPoint : Int {
	case NORTH
	case EAST
	case SOUTH
	case WEST
}

func CompassPointToString(_ c:CompassPoint) -> String {
	var result:String = ""
	switch c {
		case CompassPoint.NORTH:
			result = "North"
		case CompassPoint.EAST:
			result = "East"
		case CompassPoint.SOUTH:
			result = "South"
		case CompassPoint.WEST:
			result = "West"
	}
	return result
}

func turnRight(_ c:CompassPoint) -> CompassPoint {
	if c == CompassPoint.NORTH {
		return CompassPoint.EAST
	} else if c == CompassPoint.EAST {
		return CompassPoint.SOUTH
	} else if c == CompassPoint.SOUTH {
		return CompassPoint.WEST
	} else {
		return CompassPoint.NORTH
	}
}

// Begin Main
var cp1:CompassPoint = CompassPoint.NORTH
print("cp1: " + String(describing: cp1))
print("SOUTH: " + CompassPointToString(CompassPoint.SOUTH))
print("turnRight(cp1): " + CompassPointToString(turnRight(cp1)))
var cp2:CompassPoint = CompassPoint.EAST
if cp1 == cp2 {
	print("cp1 == cp2")
} else {
	print("cp1 != cp2")
}
cp1 = cp2
if cp1 == cp2 {
	print("cp1 == cp2")
} else {
	print("cp1 != cp2")
}

exit(EXIT_SUCCESS)
Output
$ swiftc Enums1.swift -I . -L . -lUtils error: link command failed with exit code 1 (use -v to see invocation) ld: library not found for -lUtils clang: error: linker command failed with exit code 1 (use -v to see invocation)
Enums2.swift
#!/usr/bin/env swift;
import Foundation
import Utils

enum Color : Int {
	case RED = 1
	case GREEN = 2
	case YELLOW = 3
	case BLUE = 4
	case MAGENTA = 5
	case CYAN = 6
}

func combineColors(_ c1:Color, _ c2:Color) -> Color {
	let i1:Int = c1.rawValue
	let i2:Int = c2.rawValue
	let result:Int = i1 | i2
	let returnColor:Color? = Color(rawValue: result)
	return returnColor!
}

// Begin Main
var c1:Color = Color.BLUE
print("c1: " + String(describing: c1))
print("RED: " + String(describing: Color.RED))
print("combineColors(c1, RED): " + String(describing: combineColors(c1, Color.RED)))
var c2:Color = Color.GREEN
print("combineColors(c1, c2): " + String(describing: combineColors(c1, c2)))
if c1 == c2 {
	print("c1 == c2")
} else {
	print("c1 != c2")
}
c1 = c2
if c1 == c2 {
	print("c1 == c2")
} else {
	print("c1 != c2")
}
var bad:Color? = Color(rawValue: 7)
print("bad: " + String(describing: bad))

exit(EXIT_SUCCESS)
Output
$ swiftc Enums2.swift -I . -L . -lUtils error: link command failed with exit code 1 (use -v to see invocation) ld: library not found for -lUtils clang: error: linker command failed with exit code 1 (use -v to see invocation)
swift

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