Libraries now work different from what videos teach

[ghost]

Solidity Library Changes (2023-2024)

Recent Solidity updates (v0.8.25+) have introduced changes to how libraries work:

What Changed

• Libraries now support transient storage (EIP-1153)
• New using for directive is recommended over direct imports
• Improved gas optimization for library functions

Example

// Old way (pre-2023)
import "./PriceConverter.sol";
contract MyContract {
function someFunction() public {
PriceConverter converter;
converter.someFunction();
}
}

// New way (2023+)
library PriceConverter {
function someFunction() internal view returns (uint256) {

}

}
contract MyContract {
using PriceConverter for uint256;
function someFunction() public {
uint256 value;
value.someFunction();
}
}

[EngrPips]

Hello @nikola755, Don't we still have to import the library using import "./PriceConverter.sol"; before we can declare the using for in our contract?