如何在混音中测试按照示例映射智能合约？

Question

我想在

我在输入字段中以标记 set 的函数的输入字段？

映射.sol

// https://solidity-by-example.org/mapping
// Mapping
// Maps are created with the syntax mapping(keyType => valueType).
// The keyType can be any built-in value type, bytes, string, or any contract.
// valueType can be any type including another mapping or an array.
// Mappings are not iterable.

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

contract Mapping {
    // Mapping from address to uint
    mapping(address => uint) public myMap;

    function get(address _addr) public view returns (uint) {
        // Mapping always returns a value.
        // If the value was never set, it will return the default value.
        return myMap[_addr];
    }

    function set(address _addr, uint _i) public {
        // Update the value at this address
        myMap[_addr] = _i;
    }

    function remove(address _addr) public {
        // Reset the value to the default value.
        delete myMap[_addr];
    }
}

contract NestedMapping {
    // Nested mapping (mapping from address to another mapping)
    mapping(address => mapping(uint => bool)) public nested;

    function get(address _addr1, uint _i) public view returns (bool) {
        // You can get values from a nested mapping
        // even when it is not initialized
        return nested[_addr1][_i];
    }

    function set(
        address _addr1,
        uint _i,
        bool _boo
    ) public {
        nested[_addr1][_i] = _boo;
    }

    function remove(address _addr1, uint _i) public {
        delete nested[_addr1][_i];
    }
}

此代码来自 solidity by示例。

当我在混音中实现它时，我将获取以下屏幕。

此时，要对其进行测试，我想我需要将地址>映射到uint256，所以我在字段中输入以下内容 set 按钮旁边：

["0xcf646ed6e21fd0756ec45a6be5e1057fc24a1b8308175ff0b9f97f565b594eb3", 7439]

地址的值是随机生成的哈希（我怀疑随机哈希 yim 是一个问题吗？）

我希望看到 set 函数渲染值7439。但是，相反，它引发了以下错误：

转换到映射。设置错误：错误编码参数：错误：无效地址（参数=“地址”，value = [“ 0xcf646ed6ed6e21fd0756ec45a6ec45a6be5e1057fc24fc24fc24a1b8308175ff0b8175ff0b9f97f97f97f565b565b5b594egl bb3参数= null，value = [“ 0xcf646ed6e21fd0756ec45a6be5e1057fc24a1b8308175ff0b97f97f565b594eb3”，7439，7439]

= [“ 0xCF646ED6ED6EFD0756EC45A6BE5E1057FC24A1B8308175FF0B9F97F97F565B594EB3 ”

Answer 1

您已经生成了一个随机的SHA-256，该SHA-256是有效地址的格式，但是它在混音的基于浏览器的（JavaScript VM）链上不存在作为任何帐户。如果是这样，您可能会很幸运。

如果要使用基于浏览器的VM链上确实存在的有效地址，请在帐户部分中复制和使用这些地址。