// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.28;

import { Bool } from "solidity-scale-codec/src/Scale/Bool.sol";
import { I16 } from "solidity-scale-codec/src/Scale/Signed.sol";
import { U8, U16 } from "solidity-scale-codec/src/Scale/Unsigned.sol";

contract Example {
  using Bool for bool;
  using I16 for int16;
  using U8 for uint8;
  using U16 for uint16;

  struct Foo {
    uint8 a;
    uint16 b;
    int16 c;
    bool d;
  }

  function encodeFoo(Foo calldata f) external pure returns (bytes memory) {
    return
      abi.encodePacked(f.a.encode(), f.b.encode(), f.c.encode(), f.d.encode());
  }

  function decodeFoo(bytes calldata b) external pure returns (Foo memory) {
    return
      Foo({
        a: U8.decodeAt(b, 0),
        b: U16.decodeAt(b, 1),
        c: I16.decodeAt(b, 3),
        d: Bool.decodeAt(b, 5)
      });
  }
}