Lesson 2- arrays and structs

[ttjerry]

Solidity => people_data [ ] public userdata;
This line of code keeps giving me the error "Identifier not found or not unique"
help me out please

[RoboCrypter]

@JerryCodesAfrica : Your contract code!

Just copy paste it here!

[ttjerry]

function addtoarray(uint memory Name , uint _age) public {
   people[ ] public peopledata;
  people user = people({publicNumber: Name, age: _age});
}
function retrieve() public view returns(uint){
  return publicNumber;
} 

might be a version error i dont know

[ttjerry]

i'm compiling with solidity version 0.8.7

[RoboCrypter]

@JerryCodesAfrica : Can you send me your whole code! So that I can test!

Like from pragma to the end!

Just Select your code from your ide and paste it here!

[ttjerry]

i've fixed the err thanks
here's the code

contract simplestorage{
    string name;
    int256 number;
    people[] public user_data;
    struct people {
        string name;
        int256 number;
    }
    function AddUser(string memory Name , int256 num) public {
        user_data.push(people(Name,num));
    }
} ```

[ttjerry]

anytime i try to declare an array it that's the error i keep getting

[wxy-sudo]

try to delete the space between "[]"

[ttjerry]

okay thanks

[wxy-sudo]

try to delete the space between "[]"

[ttjerry]

okay

[krakxn]

@JerryCodesAfrica The entire code please.

[ttjerry]

contract simplestorage{
    string name;
    int256 number;
    people[] public user_data;
    
    struct people {
        string name;
        int256 number;
    }
    function AddUser(string memory Name , int256 num) public {
        user_data.push(people(Name,num));
    }
} 

[alymurtazamemon]

For others, the issue is solved by moving the people[] public user_data; outside of a function.

[krakxn]

@JerryCodesAfrica You should follow a strict naming convention by the way, which is uniform throughout the code-base.

Right now, it will be very hard to detect typos or debug variables (e.g. simplestorage, user_data, AddUser, Name). Use camelCase (search this on Google and see what it is) throughout your codebase.

Of course, you can follow other naming conventions too but please keep the same one (i.e. keep it consistent) throughout a specific codebase.

[ttjerry]

okay thank you very much