CJ42

Solidity Time Unit	Number of seconds
seconds	1
minutes	60
hours	3,600
days	86,400
weeks	604,800

CJ42

// SPDC-License-Identifier: Apache-2.0
pragma solidity ^0.8.10;

contract TimeUnits {

    function Seconds() public pure returns (uint256) {
        // 1
        return 1 seconds;
    }

CJ42

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;

contract EtherUnits {

    function assignEtherUnits() public {

        uint256 gasWithExtraFee = 2 gwei + 5_000 wei;
    }

CJ42

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;

contract EtherUnits {

    function example() public {

        uint256 a = 20;

        // test = 5,000,000,000,000,000,020

CJ42

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;

contract StakeHolders {

    uint256 immutable numberOfStakeholders;

    constructor(uint256 numberOfStakeholders_) {
        numberOfStakeholders = numberOfStakeholders_;
    }

CJ42

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;

contract EtherUnits {

    function notWorking() public {
        uint256 total;

        // TypeError: Hexadecimal numbers cannot be used with unit denominations. 
        // You can use an expression of the form "0x1234 * 1 day" instead.

CJ42

Unit	➕ Number of decimals 0s	➖ Number of fractional 0s	1 Ether =
wei	18		1,000,000,000,000,000,000 Wei
kwei	15		1,000,000,000,000,000 Kwei
mwei	12		1,000,000,000,000 Mwei
gwei	9		1,000,000,000 Gwei
ether	...	...	...
kether		3 decimals	0.001 Kether
mether		6 decimals	0.000001 Mether
gether		9 decimals	0.000000001 Gether

CJ42

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;

contract EtherUnits {

    function minimumTypes() public {
        // minimum `uintN` type for wei = any

        // OK
        uint8 a = 1 wei;

CJ42

pragma solidity >=0.7.0 <0.9.0;

contract Ownable {
    address private owner;

    // event for EVM logging
    event OwnerSet(address indexed oldOwner, address indexed newOwner);

    // modifier to check if caller is owner
    modifier isOwner() {

CJ42

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.0;

contract ContractTemplate {
    // some logic here...
}

abstract contract MyContract {

    // This will not compile and throw the error