DynamicTestable.h

//
//  DynamicTestable.h
//  fastclass
//
//  Created by Michael Hulet on 9/20/18.
//  Copyright © 2018 Michael Hulet. All rights reserved.
//

#ifndef DynamicTestable_h
#define DynamicTestable_h

@import Foundation;

@protocol DynamicTestable
@property (nonatomic, nonnull, readonly) NSString *objectType;
@property (nonatomic) NSInteger property;
-(NSInteger)propertyWithTimes:(NSInteger)times;
@end

#endif /* DynamicTestable_h */

fastclass-Bridging-Header.h

//
//  Use this file to import your target's public headers that you would like to expose to Swift.
//

#import "ObjectiveCClass.h"
#import "DynamicTestable.h"

main.swift

test(object: Structure())
test(object: SwiftClass())
test(object: ObjectiveCClass())

divide()

print("Fastest: \(fastest.type)")

ObjectiveCClass.h

//
//  ObjectiveCClass.h
//  fastclass
//
//  Created by Michael Hulet on 9/20/18.
//  Copyright © 2018 Michael Hulet. All rights reserved.
//

#import "DynamicTestable.h"
@import Foundation;

@interface ObjectiveCClass : NSObject <DynamicTestable>
@property (nonatomic, nonnull, readonly) NSString *objectType;
@property (nonatomic) NSInteger property;
-(NSInteger)propertyWithTimes:(NSInteger)times;
@end

ObjectiveCClass.m

//
//  ObjectiveCClass.m
//  fastclass
//
//  Created by Michael Hulet on 9/20/18.
//  Copyright © 2018 Michael Hulet. All rights reserved.
//

#import "ObjectiveCClass.h"

@implementation ObjectiveCClass
-(NSString *)objectType{
    return @"Objective-C Class";
}

-(NSInteger)propertyWithTimes:(NSInteger)times{
    return self.property * times;
}

@end

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Structure.swift

//
//  Structure.swift
//  fastclass
//
//  Created by Michael Hulet on 9/20/18.
//  Copyright © 2018 Michael Hulet. All rights reserved.
//

struct Structure: StaticTestable{
    var objectType: String{
        get{
            return "Swift Structure"
        }
    }

    var property: Int = 0

    func property(times: Int) -> Int {
        return property * times
    }
}

SwiftClass.swift

//
//  SwiftClass.swift
//  fastclass
//
//  Created by Michael Hulet on 9/20/18.
//  Copyright © 2018 Michael Hulet. All rights reserved.
//

class SwiftClass: DynamicTestable{
    var objectType: String{
        get{
            return "Swift Class"
        }
    }

    var property: Int = 0

    func property(withTimes times: Int) -> Int{
        return property * times
    }
}

class SwiftNSObject: NSObject, DynamicTestable{
    var objectType: String{
        get{
            return "Swift NSObject Child"
        }
    }

    var property: Int = 0

    func property(withTimes times: Int) -> Int{
        return property * times
    }
}

Testable.swift

//
//  Testable.swift
//  fastclass
//
//  Created by Michael Hulet on 9/20/18.
//  Copyright © 2018 Michael Hulet. All rights reserved.
//

import Foundation

protocol StaticTestable{ // Swift protocols don't interact well with @objc protocols
    var objectType: String{ get }

    var property: Int{ get set }

    func property(times: Int) -> Int
}

var fastest = (type: "", time: TimeInterval.infinity)
var slowest = (type: "", time: TimeInterval(0))

let testCount = 100_000_000

func divide() -> Void{
    print("\n------------------------------------------------------------\n")
}

func test<T: StaticTestable>(object: T) -> Void{
    var object = object // This is so we can have mutability
    divide()
    print(object.objectType)

    DispatchQueue(label: object.objectType).sync {
        let start = Date()

        for _ in 1...testCount{
            object.property += 1
            let _ = object.property(times: 2);
            someFunction(object)
        }

        let end = Date()

        let runtime = end.timeIntervalSince(start)

        if runtime < fastest.time{
            fastest.time = runtime
            fastest.type = object.objectType
        }
        else if runtime > slowest.time{
            slowest.time = runtime
            slowest.type = object.objectType
        }

        print("Runtime: \(runtime) seconds")
    }
}

func test<T: DynamicTestable>(object: T) -> Void{
    divide()
    print(object.objectType)

    DispatchQueue(label: object.objectType).sync {
        let start = Date()

        for _ in 1...testCount{
            object.property += 1
            let _ = object.property(withTimes: 2);
            someFunction(object)
        }

        let end = Date()

        let runtime = end.timeIntervalSince(start)

        if runtime < fastest.time{
            fastest.time = runtime
            fastest.type = object.objectType
        }
        else if runtime > slowest.time{
            slowest.time = runtime
            slowest.type = object.objectType
        }

        print("Runtime: \(runtime) seconds")
    }
}

func someFunction<T: StaticTestable>(_ this: T) -> Void{
    let _ = this.property
}

func someFunction<T: DynamicTestable>(_ this: T) -> Void{
    let _ = this.property
}