Blog = Eth + Angular + NgRx sol file

PokemonAttack.sol

pragma solidity ^0.5.2;

contract PokemonAttack {
    
    //this declares a state variable which means it belongs to the contract's state
    //This will give us a way to store a string value to the blockchain inside the smart contract.
    string attack;
    
    constructor(string memory initialAttack) public {
        attack = initialAttack;
    }

    // event
    event attackChangedEvent (
        string _attack
    );
	
    //call function
    function currentAttack() public view returns(string memory) {
        return attack;
    }	
    
    //transaction function
    function changeAttack(string memory _attack) public returns (bool){ 
        attack = _attack;
        emit attackChangedEvent(_attack);

        return true;
    }
   
}