Example of alternative method for doing if / else statements using Nil Coalescing Operator.

NilCoalescingOperator.swift

//
// NilCoalescingOperator.swift
// Example of alternative method for doing if / else statements using Nil Coalescing Operator.
//
//  Created by Mark Hamilton on 2/20/16.
//  Copyright © 2016 dryverless. All rights reserved.
// 

private var _otherObject: OtherObject? // returns nil unless set
private let _defaultObject: DefaultObject! = DefaultObject() // create a default

var publicObject: AnyObject {
    
    // if _otherObject is not nil, return it, otherwise return _defaultObject
    // short hand version of doing the line as: if let object = _otherObject != nil ? _otherObject! : _defaultObject
    if let object = _otherObject ?? _defaultObject {
        return object
    }

}