Calvin T Calvin087

## setApprovalForAll.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
    // Mapping from owner to operator approvals
    mapping(address => mapping(address => bool)) private _operatorApprovals;

    /**
     * @dev See {IERC721-setApprovalForAll}.
     */

## Effective_Engineer.md

      
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                Calvin087
                / Effective_Engineer.md
            
            
              Created
              December 24, 2021 11:01
                — forked from rondy/Effective_Engineer.md
            
          
    FWIW: I'm not the author of the content presented here (which is an outline from Edmond Lau's book). I've just copy-pasted it from somewhere over the Internet, but I cannot remember what exactly the original source is. I was also not able to find the author's name, so I cannot give him/her the proper credits.

Effective Engineer - Notes


By Edmond Lau
Highly Recommended 👍
http://www.theeffectiveengineer.com/

What's an Effective Engineer?
	// SPDX-License-Identifier: MIT
	pragma solidity ^0.8.0;

	contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
	// Mapping from owner to operator approvals
	mapping(address => mapping(address => bool)) private _operatorApprovals;

	/**
	* @dev See {IERC721-setApprovalForAll}.
	*/