Swift - how to store a struct instance in a class propriety - swift

Question

I am very new to Swift so I apologize upfront if this is a "dumb" question. I am just working on a playgrounds script for generating random items, in this case, weapons. When I run my code I get this error: error: Execution was interrupted, reason: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0). What I was trying to do is hold an instance of a structure(which is handle) in my class normalBladeType in variable weaponHandle. I've tried researching about this topic but I've yet to find an answer. Any suggestions would be great. For all I know I may be going about this all wrong.
Thanks,
my code:
//: Playground - noun: a place where people can play
import Cocoa
let handleWoods = ["White Ash", "Oak", "White Oak", "Elm", "Maple","Walnut", "Cherry", "Rosewood", "Ash", "Hickory", "Birch", "Hemlock", "Cedar", "Pine"]
let handleGrips = ["Leather", "Buckskin", "Sharkskin", "Goat Skin", "Deerskin", "Elk Skin", "Rayskin", "Snakeskin", "Silk Cord", "Cotton Cord"]
let gripQualities = ["Simple", "Interwoven", "Ornate", "Smooth", "Thin", "Thick", "Ruff", "Worn"]
func returnRandomItem( _ list: [Any])-> Any {
return list[Int(UInt32(list.count))]
}
struct handle {
var name: String
var value, grip: Int
var weight: Double
var withGrip: Bool
init(withGrip: Bool) {
self.weight = 0.25
self.withGrip = withGrip
let handleNameWithWood = "\(returnRandomItem(handleWoods)) Handle"
if self.withGrip {
let randGrip = "\(returnRandomItem(gripQualities)) \(returnRandomItem(handleGrips)) Grip)"
self.name = "\(randGrip) (\(handleNameWithWood))"
self.grip = 75
self.value = 2
} else {
self.name = handleNameWithWood
self.grip = 50
self.value = 1
}
}
func description() {
print("Handle Description \(self.name)")
}
}
class weapon {
var TypeOfWeapon: String
var weaponHandle: handle
init(weaponType: String, doesHaveGrip: Bool) {
self.TypeOfWeapon = weaponType
self.weaponHandle = handle(withGrip: doesHaveGrip)
}
}
class normalBladeType: weapon {
init() {
super.init(weaponType: "normalBladeType", doesHaveGrip: false)
}
func description() {
print("TypeOfWeapon: \(self.TypeOfWeapon)")
print("TypeDescription: normal hilt (guard - handle - pommel) + straight blade")
}
}
var foo = normalBladeType()
foo.description()

Answer 1

Your returnRandomItem function is wrong. You should change it to
func returnRandomItem( _ list: [Any])-> Any {
let index: UInt32 = arc4random_uniform(UInt32(list.count))
return list[Int(index)]
}
It is working fine for me with this code.