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Layout of a Solidity Source File — Solidity 0.6.7 documentation
Layout of a Solidity Source File¶ Source files can contain an arbitrary number of contract definitions, import directives, pragma directives and struct and enum definitions. Pragmas¶ The pragma keyword is used to enable certain compiler features or checks. A pragma directive is always local to a source file, so you have to add the pragma to all your files if you want enable it in your whole projec
String memory variable cause function to return no value · Issue #3998 · ethereum/solidity · GitHub
pragma solidity ^0.4.23; contract Season { address[] public requests; mapping(bytes32 => address) requestIdToAddress; function createRequest(string id) public { bytes32 hash = keccak256(id); require(requestIdToAddress[hash] == 0); Request request = new Request(id); requests.push(request); requestIdToAddress[hash] = request; } function getRequestsCount() public view returns(uint) { return requests.
Solidity by Example — Solidity 0.4.24 documentation
Voting¶ The following contract is quite complex, but showcases a lot of Solidity’s features. It implements a voting contract. Of course, the main problems of electronic voting is how to assign voting rights to the correct persons and how to prevent manipulation. We will not solve all problems here, but at least we will show how delegated voting can be done so that vote counting is automatic and co
Solidity — Solidity 0.4.24 documentation
Solidity is a contract-oriented, high-level language for implementing smart contracts. It was influenced by C++, Python and JavaScript and is designed to target the Ethereum Virtual Machine (EVM). Solidity is statically typed, supports inheritance, libraries and complex user-defined types among other features. As you will see, it is possible to create contracts for voting, crowdfunding, blind auct
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Amazon.co.jp: マスタリング・イーサリアム ―スマートコントラクトとDAppの構築: Andreas M. Antonopoulos (著), Gavin Wood (著), 宇野雅晴 (監修), 鳩貝淳一郎 (監修), 中城元臣 (監修), 落合渉悟 (監修), 落合庸介 (翻訳), 小林泰男 (翻訳), 土屋春樹 (翻訳), 祢津誠晃 (翻訳), 平山翔 (翻訳), 三津澤サルバドール将司 (翻訳), 山口和輝 (翻訳), 宇野雅晴 (翻訳), 鳩貝淳一郎 (翻訳): 本
Amazon.co.jp: Solidityプログラミング ブロックチェーン・スマートコントラクト開発入門 (KS情報科学専門書): Ritesh Modi (著), 花村直親 (翻訳), 松本拓也 (翻訳), 小池駿平 (翻訳): 本
Solidity v0.5.0 Breaking Changes — Solidity 0.6.7 documentation
Security Considerations — Solidity 0.5.1 documentation
Issue calling function on another contract since version 4.22+ · Issue #3969 · ethereum/solidity
Modifiers add to stack, discourages modifier usage · Issue #3060 · ethereum/solidity
Add section about EVM version and explain its implications · Issue #4259 · ethereum/solidity
The Ethernaut
Solidity — Solidity 0.6.7 documentation
Introduction to Smart Contracts — Solidity 0.6.7 documentation
Miscellaneous — Solidity 0.5.12 documentation
Style Guide — Solidity 0.6.7 documentation
UnhandledPromiseRejectionWarning: Error: The contract code couldn't be stored, please check your gas limit
Solidity in Depth — Solidity 0.5.12 documentation
Expressions and Control Structures — Solidity 0.6.7 documentation