gistfile1.txt

  private readonly foo = ArrayStorage.for<[Address, Address]>();
  private readonly foo2 = SetStorage.for<[Address, Address]>();
  private readonly balances = MapStorage.for<Address, Fixed<8>>();
  private readonly approvedTransfers = MapStorage.for<[Address, Address], Fixed<8>>();
  private mutableRemaining: Fixed<8> = 10_000_000_000_00000000;
  private mutableSupply: Fixed<8> = 0;

  public constructor(
    public readonly owner: Address = Deploy.senderAddress,
    public readonly startTimeSeconds: Integer = Blockchain.currentBlockTime + 60 * 60,
    public readonly icoDurationSeconds: Integer = 86400,
  ) {
    super();
    if (!Address.isCaller(owner)) {
      throw new Error('Sender was not the owner.');
    }
  }

  @constant
  public get totalSupply(): Fixed<8> {
    return this.mutableSupply;
  }

  @constant
  public balanceOf(address: Address): Fixed<8> {
    const setStorageAtAddress = this.foo2.at(address);
    const x: Address = Address.from();
    // tslint:disable-next-line
    for (const sendAddressInPair of this.foo2.at(address)) {

    }
    this.foo2.delete([address, x])
    const balance = this.balances.get(address);

    return balance === undefined ? 0 : balance;
  }