About "delete" keyword

Serenity · November 18, 2021, 2:48am

will delete keyword save gas for me after London upgrade with EIP-3529 or other related eip? should i use delete for gas saving in my contract. i didn't know is it a correct way after upgrad
i saw this line. so will delete still save gas for me?

github.com

OpenZeppelin/openzeppelin-contracts/blob/a94cf0509f19292c3edd3e102c025c793c241d05/contracts/token/ERC721/ERC721.sol#L311

    
      
           */
          function _burn(uint256 tokenId) internal virtual {
              address owner = ERC721.ownerOf(tokenId);
          
          
    _beforeTokenTransfer(owner, address(0), tokenId);
          
          
    // Clear approvals
              _approve(address(0), tokenId);
          
          
    _balances[owner] -= 1;
              delete _owners[tokenId];
          
          
    emit Transfer(owner, address(0), tokenId);
          }
          
          
/**
           * @dev Transfers `tokenId` from `from` to `to`.
           *  As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
           *
           * Requirements:
           *

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About "delete" keyword

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