Solidity Js，在函数获取时，我得到一个错误，因为“TypeError：数据位置必须是”memory“或”calldata”，用于函数中的返回参数

Question

`

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.0;

contract MyContract{

string value;
constructor() public   {
    value = "MyValue";
}
function get() public returns(string)  {
    return value;
}

function set(string memory _value) public  {
    value = _value;
}


}`

on function get i get an error as TypeError: Data location must be "memory" or "calldata" for return parameter in function, but none was given. i couldnt solve it because the "value" variable is already identified it doesn neew to be memoried

Answer 1

string is a reference type, so you need to specify its data location . In this case, the value is loaded from storage to memory, and then returned from the memory .

function get() public returns(string memory)  {
    return value;
}