🍰 Layered Cakewalk [Swift] - Get All Types at Runtime (Swift)

ObjC+Extensions.swift

/// 
/// 🍰 Layered Cakewalk
///
/// Gets all defined `Swift` and `Objective-C` classes.
///

public static func allTypes() -> [AnyObject.Type]
{
    let typeCount = Int(objc_getClassList(nil, 0))
    let     types = UnsafeMutablePointer<AnyObject.Type>.allocate(capacity: typeCount)
    defer { types.deallocate() }

    let safeTypes = AutoreleasingUnsafeMutablePointer<AnyObject.Type>(types)
                    objc_getClassList(safeTypes, Int32(typeCount))

    return [AnyObject.Type](unsafeUninitializedCapacity: typeCount)
    {
        buffer, initializedCapacity in

        for index in 0 ..< typeCount
        {
            buffer[index] = safeTypes[index]
        }

        initializedCapacity = typeCount
    }
}