examples/solidity-mappings

Mappings.sol

pragma solidity >=0.5.0;

contract Mappings {

    // State variable
    mapping(address => uint) public myMapping;

    // Store a new value in the mapping
    function putThing(address _key, uint _value) public {
        myMapping[_key] = _value;
    }

    // Retrieve a value from the mapping using key to search
    function getThing(address _search) public view returns (uint){
        return myMapping[_search];
    }

}