第一章 Hello World

建议使用 Linux & Mac

写一个 hello world 程序

1. 创建一个目录

   mkdir hello_world

2. 初始化项目结构为 move 结构

   aptos move init --name hello_move
   #  --name <NAME>       Name of the new Move package
   # 这里的 --name 会作为配置文件中的 name 名称

   • 返回的结果

   {
   "Result": "Success"
   }

   • Move 程序的配置文件

   [package]
   name = "hello_move"
   version = "1.0.0"
   authors = []
    
   [addresses]
    
   [dev-addresses]
    
   [dependencies.AptosFramework]
   git = "https://github.com/aptos-labs/aptos-core.git"
   rev = "mainnet"
   subdir = "aptos-move/framework/aptos-framework"
    
   [dev-dependencies]

3. 初始化 aptos 账户

   aptos init --network testnet # 使用测试网

   • 选择

   caoyang@cccy hello_world % aptos init --network testnet
    
   Configuring for profile default
   Configuring for network Testnet
   Enter your private key as a hex literal (0x...) [Current: None | No input: Generate new key (or keep one if present)]
   # 按回车键
   No key given, generating key...
    
   Account 0x869babd17f0891d535f25fb6e407cc3dc53e2744538ab959f04b799bc83a59d9 doesn't exist, creating it and funding it with 100000000 Octas
   Account 0x869babd17f0891d535f25fb6e407cc3dc53e2744538ab959f04b799bc83a59d9 funded successfully
    
   ---
   Aptos CLI is now set up for account 0x869babd17f0891d535f25fb6e407cc3dc53e2744538ab959f04b799bc83a59d9 as profile default!  Run `aptos --help` for more information about commands

   • 返回结果

   {
    "Result": "Success"
   }

4. 写入程序代码

   cd sources 
   # 可以使用任何编辑软件写入
   # vim hello_move.move 

   • 写入

     module 0x42::hello {
         #[test_only]
         use std::string;
         #[test_only]
         use std::debug::print;
      
         #[test]
         fun test() {
             let hello = string::utf8(b"hello_world");
             print(&hello);
         }
     }

   • 测试

     caoyang@cccy hello_world % aptos move test
     INCLUDING DEPENDENCY AptosFramework
     INCLUDING DEPENDENCY AptosStdlib
     INCLUDING DEPENDENCY MoveStdlib
     BUILDING hello_move
     Running Move unit tests
     [debug] "hello_world"
     [ PASS    ] 0x42::hello::test
     Test result: OK. Total tests: 1; passed: 1; failed: 0
     {
       "Result": "Success"
     }

可能遇到的问题：

• 网络问题

caoyang@cccy sources % aptos move test
{
  "Error": "Unexpected error: Failed to run tests: Unable to resolve packages for package 'hello_move': While resolving dependency 'AptosFramework' in package 'hello_move': Failed to fetch to latest Git state for package 'AptosFramework', to skip set --skip-fetch-latest-git-deps | Exit status: exit status: 128"
}

解决方法：

1. 切换为能访问 GitHub 的网络

   自行修改

2. 修改 Move.toml 中的 GitHub 官方地址为 Gitee 地址

   [dependencies.AptosFramework]
   # git = "https://github.com/aptos-labs/aptos-core.git"
   git = "https://gitee.com/WGB5445/aptos-core.git"
   rev = "mainnet"
   subdir = "aptos-move/framework/aptos-framework"