Address Details
contract

0x9442d52bF59e25C977d0920255d1E34a35ebbfCA

Contract Name
HelloCeloDevs
Creator
0x449862–6a6db8 at 0xd0fd0b–bdd3c1
Balance
0 CELO ( )
Locked CELO Balance
0.00 CELO
Voting CELO Balance
0.00 CELO
Pending Unlocked Gold
0.00 CELO
Tokens
Fetching tokens...
Transactions
7 Transactions
Transfers
0 Transfers
Gas Used
214,287
Last Balance Update
7747739
This contract has been verified via Sourcify. View contract in Sourcify repository
Contract name:
HelloCeloDevs




Optimization enabled
false
Compiler version
v0.8.0+commit.c7dfd78e




EVM Version
istanbul




Verified at
2023-02-01T20:18:48.419741Z

project:/contracts/HelloCeloDevs.sol

pragma solidity >=0.8.0;
// SPDX-License-Identifier: MIT
contract HelloCeloDevs {

    // Data mapping
    struct DataMap{
        string _name;
    }

    // Set map of addresses to DataMap{} structure
    mapping(address => DataMap) dataMap;

    // Store name within data map
    function setName(string memory _name) public {
        require(isString(_name), "Error: must include data");
        dataMap[tx.origin]._name = _name;
    }

    // Contract call
    function sayHello() public view returns(string memory){
        if(isString(dataMap[tx.origin]._name)){
            return(concatStrings("Hello ",dataMap[tx.origin]._name,"!"));
        }
            return("Hello Celo Devs!");
    }

    // Delete name from dataMap
    function deleteName() public {
        delete dataMap[tx.origin]._name;
    }

    // String validation
    function isString(string memory _string) private pure returns(bool){
        bytes memory stringTest = bytes(_string);
        if (stringTest.length == 0) {
            return false;
        }
        return true;
    }

    // Concatenate strings by appending a string to another with ABI encoding
    function concatStrings(string memory a, string memory b, string memory c) internal pure returns (string memory) {
        return string(abi.encodePacked(a, b, c));
    }
}

Contract ABI

[{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"deleteName","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"string","name":"","internalType":"string"}],"name":"sayHello","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setName","inputs":[{"type":"string","name":"_name","internalType":"string"}]}]

Contract Creation Code

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Deployed ByteCode

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