//Write your own contracts here. Currently compiles using solc v0.4.15+commit.bbb8e64f. pragma solidity ^0.4.25; contract SimpleStore { mapping(uint => string[]) private itemsHistory; function set(uint item, string entry) public { itemsHistory[item].push(entry); } function get(uint item, uint index) public constant returns (string) { return itemsHistory[item][index]; } function itemHistoryLength(uint item) public view returns (uint) { return itemsHistory[item].length; } }
0.4.25