Gambas 语言区块链智能合约示例
随着区块链技术的不断发展，智能合约作为一种无需第三方中介即可执行合约的编程技术，越来越受到关注。Gambas 是一种基于 Delphi 的开源编程语言，它提供了丰富的库和工具，使得开发者可以轻松地创建跨平台的桌面应用程序。本文将围绕 Gambas 语言，提供一个简单的区块链智能合约示例，帮助读者了解如何使用 Gambas 语言进行区块链智能合约的开发。
Gambas 语言简介
Gambas 是一种面向对象的编程语言，它继承了 Delphi 的语法和设计理念，同时增加了对 Linux 和其他操作系统的支持。Gambas 提供了丰富的库和工具，包括图形界面、数据库访问、网络通信等，使得开发者可以快速开发出功能丰富的应用程序。
区块链智能合约简介
智能合约是一种自动执行合约条款的程序，它可以在满足特定条件时自动执行相应的操作。在区块链上，智能合约通常以加密货币的形式存在，例如以太坊上的 Solidity 语言编写的智能合约。智能合约的执行是透明的、不可篡改的，并且可以在全球范围内进行。
Gambas 语言区块链智能合约示例
以下是一个使用 Gambas 语言编写的简单区块链智能合约示例。这个合约将实现一个简单的交易记录功能，允许用户添加交易记录到区块链中。
1. 定义区块链结构
我们需要定义一个区块链的结构，包括区块和链本身。
```gambas
Public
Type
Block As Structure
Public
Index As Integer
Timestamp As Long
Transactions As List
PreviousHash As String
Hash As String
Constructor()
Destructor()
Blockchain As Structure
Public
Chain As List
Difficulty As Integer
MiningReward As Double
Constructor()
Destructor()
Declare Sub New()
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String, Hash As String)
Declare Sub New(Difficulty As Integer, MiningReward As Double)
Declare Sub New(Chain As List)
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
Declare Sub New(Hash As String)
Declare Sub New(Transactions As List)
Declare Sub New(Index As Integer, Timestamp As Long, Transactions As List, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long, PreviousHash As String)
Declare Sub New(Index As Integer, Timestamp As Long)
Declare Sub New()
Declare Sub New(PreviousHash As String)
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