Wallet struct Wallet : Codable A wallet stores the total co2 a user has saved. userId UserId of the owner of the wallet. (hex) Declaration Swift let userId: String totalCO2 Total co2 in KG saved by the user. Declaration Swift let totalCO2: Int © 2020 . All rights reserved. (Last updated: 2020-01-11) Generated by jazzy ♪♫ v0.12.0, a Realm project.