ethereum-call-contract.swift

let testContractAddress = try! Address(describing: "0xb8f016F3529b198b4a06574f3E9BDc04948ad852")
query.helloContract(at: testContractAddress).testString(greetString: "Greetings!").send(using: key, amount: Wei(10)).startWithResult { result in
    switch result {
    case .success(let hash):
        print(hash)
        print("Test greetings succeeded!")
    case .failure(let error):
        print(error)
        print("Test greetings failed.")
    }
}