![ethereum - DeclarationError: Undeclared identifier - although it's present in ERC721.sol - Stack Overflow ethereum - DeclarationError: Undeclared identifier - although it's present in ERC721.sol - Stack Overflow](https://i.stack.imgur.com/f0sjA.png)
ethereum - DeclarationError: Undeclared identifier - although it's present in ERC721.sol - Stack Overflow
![How to verify a contract on Etherscan/BscScan/PolygonScan - #21 by doswelleth - Guides and Tutorials - OpenZeppelin Forum How to verify a contract on Etherscan/BscScan/PolygonScan - #21 by doswelleth - Guides and Tutorials - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/optimized/2X/2/24e40a7af1710d50a0e2e73ae381d9be031e96e1_2_690x456.png)
How to verify a contract on Etherscan/BscScan/PolygonScan - #21 by doswelleth - Guides and Tutorials - OpenZeppelin Forum
![AccessControl suddenly giving error : TypeError: Member "toHexString" not found or not visible after argument-dependent lookup in type(library Strings) - Contracts - OpenZeppelin Forum AccessControl suddenly giving error : TypeError: Member "toHexString" not found or not visible after argument-dependent lookup in type(library Strings) - Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/optimized/3X/5/f/5f13aa696b2e6ebd0496d37a99ede15dc9bb96ba_2_673x500.png)
AccessControl suddenly giving error : TypeError: Member "toHexString" not found or not visible after argument-dependent lookup in type(library Strings) - Contracts - OpenZeppelin Forum
Strings.toString doesn't compile with integer literals · Issue #4298 · OpenZeppelin/openzeppelin-contracts · GitHub
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Truffle Imports of OpenZeppelin Contracts fail for art NFT (Factory ERC 1155 smart contract) - Smart Contracts - OpenZeppelin Forum
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Solidity Strings — Mrexamples. We are discussing solidity strings, and… | by Mrexamples | CoinsBench
![How to verify a contract on Etherscan/BscScan/PolygonScan - #21 by doswelleth - Guides and Tutorials - OpenZeppelin Forum How to verify a contract on Etherscan/BscScan/PolygonScan - #21 by doswelleth - Guides and Tutorials - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/original/2X/f/fba650dee70362ea39c11ff9798398ec4e31f859.png)
How to verify a contract on Etherscan/BscScan/PolygonScan - #21 by doswelleth - Guides and Tutorials - OpenZeppelin Forum
![AccessControl suddenly giving error : TypeError: Member "toHexString" not found or not visible after argument-dependent lookup in type(library Strings) - Contracts - OpenZeppelin Forum AccessControl suddenly giving error : TypeError: Member "toHexString" not found or not visible after argument-dependent lookup in type(library Strings) - Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/optimized/3X/d/f/dfbd2a20b1c7f189a949619c8af5b8e75122b8cb_2_690x238.png)
AccessControl suddenly giving error : TypeError: Member "toHexString" not found or not visible after argument-dependent lookup in type(library Strings) - Contracts - OpenZeppelin Forum
openzeppelin-contracts/contracts/utils/Strings.sol at master · OpenZeppelin/ openzeppelin-contracts · GitHub
![Unable to compile contract, TypeError: "Type int_const 18 is not implicitly convertible to expected type string storage ref. decimals = 18;" - Contracts - OpenZeppelin Forum Unable to compile contract, TypeError: "Type int_const 18 is not implicitly convertible to expected type string storage ref. decimals = 18;" - Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/original/2X/1/1e91ddccc5914625e43b7ab853db2b363802c446.png)
Unable to compile contract, TypeError: "Type int_const 18 is not implicitly convertible to expected type string storage ref. decimals = 18;" - Contracts - OpenZeppelin Forum
![Improve Contract Importability/Create modular SDKs for smaller and optimized contracts - Contracts - OpenZeppelin Forum Improve Contract Importability/Create modular SDKs for smaller and optimized contracts - Contracts - OpenZeppelin Forum](https://global.discourse-cdn.com/business6/uploads/zeppelin/optimized/3X/e/a/ead033d82ac9ddcf7f1899e2add257c508fcc547_2_690x345.png)
Improve Contract Importability/Create modular SDKs for smaller and optimized contracts - Contracts - OpenZeppelin Forum
Add reason string for all assertions/requires · Issue #888 · OpenZeppelin/ openzeppelin-contracts · GitHub
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