第125篇 笔记-solidity中的编码与解码

Posted 2022-12-05 wonderBlock

本文环境：polygon testnet + metamask + remix

参考文档：第119篇 笔记-solidity中的ABI

本文介绍 solidity 合约中的 abi 编码与解码；

1.合约源码

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;

contract AbiDecode 
    struct MyStruct 
        string name;
        uint[2] nums;
    

    function encode(
        uint x,
        address addr,
        uint[] calldata arr,
        MyStruct calldata myStruct
    ) external pure returns (bytes memory) 
        return abi.encode(x, addr, arr, myStruct);
    

    function decode(bytes calldata data)
        external
        pure
        returns (
            uint x,
            address addr,
            uint[] memory arr,
            MyStruct memory myStruct
        )
    
        (x, addr, arr, myStruct) = abi.decode(data, (uint, address, uint[