openzeppelin-solidity
solidity-flattener
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openzeppelin-solidity | solidity-flattener | |
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4 | 1 | |
10,805 | 311 | |
- | 0.0% | |
9.4 | 3.5 | |
almost 3 years ago | about 1 year ago | |
JavaScript | JavaScript | |
MIT License | Apache License 2.0 |
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Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
openzeppelin-solidity
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Attack Vectors in Solidity #6:Unexpected Ether( Incorrect Use of this.balance)
pragma solidity ^0.5.0; import "https://github.com/OpenZeppelin/openzeppelin-solidity/contracts/math/SafeMath.sol"; contract MyContract { using SafeMath for uint256; function deposit() public payable { // code to deposit ether } function withdraw(uint256 _amount) public { require(this.balance.sub(_amount) >= 0, "Insufficient funds"); // code to withdraw ether } }
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How to check if tokenholder is holding 2 different tokens at the same time before an event is triggered?
The basic structure could be done as follows using OZ ERC20 interface https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/token/ERC20/IERC20.sol
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Is this why shib price keeps going down?
return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); uint256 c = a - b; return c; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522 if (a == 0) { return 0; } uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers. Reverts on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { // Solidity only automatically asserts when dividing by 0 require(b > 0, "SafeMath: division by zero"); uint256 c = a / b; // assert(a == b * c + a % b); // There is no case in which this doesn't hold return c; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * Reverts when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b != 0, "SafeMath: modulo by zero"); return a % b; }
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can someone tell me what this contract wants?
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
solidity-flattener
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Devlog 2: Gotta jot this down, bc I'll definitely forget
But NoooOOOoooOOOoo. you need an ABI since pool's are auto deployed via the factory (hence the name, duh! I knew that, was just telling you guys). Fuck me. Ok, so how do I get an ABI for an auto deployed contract? Uhg, gotta fire up remix. I tried just pulling it down from github but there are too many relative dependancies/imports to deal with. I'm not about that copy paste life, so found this neat little flattener. It's the first thing I've run today that did it's fucking job the first time! Just download the Uniswap source, install the node app and run
What are some alternatives?
RegEx-DoS - :cop: :punch: RegEx Denial of Service (ReDos) Scanner
openzeppelin-contracts - OpenZeppelin Contracts is a library for secure smart contract development.
remix - This has been moved to https://github.com/ethereum/remix-project
echidna - Ethereum smart contract fuzzer
DeFi-Developer-Road-Map - DeFi Developer roadmap is a curated Developer handbook which includes a list of the best tools for DApps development, resources and references!
eattheblocks - Source code for Eat The Blocks, a screencast for Ethereum Dapp Developers
yulp - ➕ A low-level, highly efficient extension to Yul, an intermediate language for the Ethereum Virtual Machine.
bytecode-verifier - Compile Solidity source code and verify its bytecode matches the blockchain
SoliditySamples - Solidity Smart Contracts Samples
Intergration-IDRT-Fiat-Gateway-On-Harmony-one-wallet- - intergration idrt on harmony one wallet