第24节:继承的状态变量覆盖(shadowing)
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- 状态变量无法进行重写,只能继承父类状态变量
- 但是可以通过在子合约的构造函数中进行覆盖,从而达到重写目的
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.13;
contract A {
string public name = "Contract A";
function getName() public view returns (string memory) {
return name;
}
}
// Shadowing is disallowed in Solidity 0.6
// This will not compile
// contract B is A {
// string public name = "Contract B";
// }
contract C is A {
// This is the correct way to override inherited state variables.
constructor() {
name = "Contract C";
}
// C.getName returns "Contract C"
}