Stack preparation code for the blog post "Flapjack" on O'Reilly's engineering blog.

StackPrep.swift

import Flapjack

// Create the DataAccess object, your main point-of-entry for persistence.
// You can also pass in `.sql(filename: "YourCoreDataStore.sql")`.
let dataAccess = CoreDataAccess(name: "YourCoreDataStore", type: .memory)
// Then tell the stack to configure itself.
dataAccess.prepareStack(asynchronously: true) { error in
    if let error = error {
        print(error.localizedDescription)
    }
    // Make sure you retain your `dataAccess` variable, and now you're all
    // ready to go!
}