转换和理解 solidity 中的值

Question

我一直在研究 solidity，我一直在通过 etherscan 研究以太坊主网上的类似项目。我试图了解合同的某些功能使用了哪些值。当我看着它时，我看到了这样的东西



Function: someUintFunction1(uint256 maxTxAmount)

MethodID: 0xec28438a
[0]:  0000000000000000000000000000000000000000000000a2a15d09519be00000

Function: someUintFunction2(uint256 _minimumTokensBeforeSwap)

MethodID: 0xf0f165af
[0]:  000000000000000000000000000000000000000000000002b5e3af16b1880000
=

Function: someBoolFunction(bool _enabled)

MethodID: 0xc49b9a80
[0]:  0000000000000000000000000000000000000000000000000000000000000000

我猜00000000000000000000000000000000000000000000000000000000000000000000000000 bool是错误的？

但是我如何解码000000000000000000000000000000000000000000000000000000000000000000000000000000000和00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000002B5E3AF16B18880000？

Answer 1

but how can I decode 0000000000000000000000000000000000000000000000a2a15d09519be00000 and 000000000000000000000000000000000000000000000002b5e3af16b1880000 to a readable value?

这些是 uint256 参数的值，转换为十六进制，使用大端显示（留下最大值）。

您可以手动将其转换为十进制，或者这里是使用 web3 JS 库的示例：

const Web3 = require('web3');
const web3 = new Web3();

const decimal = web3.eth.abi.decodeParameter('uint256', '0000000000000000000000000000000000000000000000a2a15d09519be00000');
console.log(decimal); // prints 3000000000000000000000

转换和理解 solidity 中的值

Converting and understanding values in solidity

ethereum

solidity