mudgen

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// A contract that implements Diamond Storage.
library LibA {

  // This struct contains state variables we care about.
  struct DiamondStorage {
    address owner;
    bytes32 dataA;

mudgen

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// Find facet for function that is called and execute the
// function if a facet is found and return any value.
fallback() external payable {
  // get facet from function selector
  address facet = selectorTofacet[msg.sig];
  require(facet != address(0));
  // Execute external function from facet using delegatecall and return any value.

mudgen

//LibAppStorage.sol

struct AppStorage {
  uint256 secondVar;
  uint256 firstVar;
  uint256 lastVar;
  ...
}

library LibAppStorage {

mudgen

//LibAppStorage.sol

struct AppStorage {
  uint256 secondVar;
  uint256 firstVar;
  uint256 lastVar;
  ...
}

library LibAppStorage {

mudgen

//LibAppStorage.sol

struct AppStorage {
  uint256 secondVar;
  uint256 firstVar;
  uint256 lastVar;
  ...
}

library LibAppStorage {

mudgen

// AppStorage.sol
struct AppStorage {
  uint256 secondVar;
  uint256 firstVar;
  uint256 lastVar;
  ...
}

// StakingFacet.sol
import "./AppStorage.sol"

mudgen

// AppStorage.sol
struct AppStorage {
  uint256 secondVar;
  uint256 firstVar;
  uint256 lastVar;
  ...
}

// StakingFacet.sol
import "./AppStorage.sol"

mudgen

// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;

contract ContractA {
    
    string internal tokenName = "FunToken";

    function initialize() external {
        address contractBAddress =  0x6B175474E89094C44Da98b954EedeAC495271d0F;

mudgen

[
    {
      "anonymous": false,
      "inputs": [
        {
          "indexed": true,
          "internalType": "address",
          "name": "depositor",
          "type": "address"
        },

mudgen

// Author: Nick Mudge (https://twitter.com/mudgen)
// This is part of my tweet thread, "Six things you need to know to use DELEGATECALL safely": https://twitter.com/mudgen

// Shows how to use DELEGATECALL

// Using OpenZeppelin's Address library check to see if 
// myContract has code.
require(Address.isContract(myContractAddress), "Address has no code");
// Set function argument we are going to use.
uint myArg = 10;