// ConsenSys Diligence
// DevCon V - October 2019
// Osaka, Japan

pragma solidity ^0.5.4;

// Say Hi
//Deployed at Ropsten: 0x0f6501d05272b95b8ad35c64f1939626ff01c81d

contract helloWorld {
   
    //Storage variables
    string public name;
    address private owner;
    
    //Defining events
    event Hi(string name);
    
    constructor() public {
        owner = msg.sender;
    }
    
    function sayHi(string memory _name) public {
        //change the name if owner calls
        if (msg.sender == owner) {
            name = _name;
        } 
        //call event
        emit Hi(_name);
    }
    
    //fallback function.
    function() external {
        emit Hi("Hello World");
    }

}


//   ______                           _____           
//   / ____/___  ____  ________  ____ / ___/__  _______
//  / /   / __ \/ __ \/ ___/ _ \/ __ \\__ \/ / / / ___/
// / /___/ /_/ / / / (__  )  __/ / / /__/ / /_/ (__  ) 
// \__________/___/_/____/\___/_/ /_/____/\__, /____/  
//   / __ \(_) (_)___ ____  ____  ______//___/        
//   / / / / / / / __ `/ _ \/ __ \/ ___/ _ \           
//  / /_/ / / / / /_/ /  __/ / / / /__/  __/           
// /_____/_/_/_/\__, /\___/_/ /_/\___/\___/            
//             /____/