Disrupt DEX迪斯克众筹质押挖矿系统开发技术分析
分布式账本技术(DLT)是世界上增长快的技术领域之一。尽管大多数人认为区块链和DLT是可互换的,但事实并非如此。I88智能合约I928系统开发8024
实际上,区块链只是DLT领域的一小部分。重要的是,分布式账本是一个数据库,它在网络的多个点之间重复存在
library UQ112x112{
uint224 constant Q112=2**112;
//encode a uint112 as a UQ112x112
function encode(uint112 y)internal pure returns(uint224 z){
z=uint224(y)*Q112;//never overflows
}
//divide a UQ112x112 by a uint112,returning a UQ112x112
function uqdiv(uint224 x,uint112 y)internal pure returns(uint224 z){
z=x/uint224(y);
}
}
ontract UniswapV2ERC20 is IUniswapV2ERC20{
using SafeMath for uint;
//token名称
string public constant name='Uniswap V2';
//token的标志
string public constant symbol='UNI-V2';
//精度
uint8 public constant decimals=18;
//token的总供应量
uint public totalSupply;
//每个地址的余额
mapping(address=>uint)public balanceOf;
//每个地址对每个地址的授权数量
mapping(address=>mapping(address=>uint))public allowance;
//EIP-712中规定的DOMAIN_SEPARATOR
bytes32 public DOMAIN_SEPARATOR;
//keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
//EIP-712中规定的TYPEHASH
实际上,区块链只是DLT领域的一小部分。重要的是,分布式账本是一个数据库,它在网络的多个点之间重复存在
library UQ112x112{
uint224 constant Q112=2**112;
//encode a uint112 as a UQ112x112
function encode(uint112 y)internal pure returns(uint224 z){
z=uint224(y)*Q112;//never overflows
}
//divide a UQ112x112 by a uint112,returning a UQ112x112
function uqdiv(uint224 x,uint112 y)internal pure returns(uint224 z){
z=x/uint224(y);
}
}
ontract UniswapV2ERC20 is IUniswapV2ERC20{
using SafeMath for uint;
//token名称
string public constant name='Uniswap V2';
//token的标志
string public constant symbol='UNI-V2';
//精度
uint8 public constant decimals=18;
//token的总供应量
uint public totalSupply;
//每个地址的余额
mapping(address=>uint)public balanceOf;
//每个地址对每个地址的授权数量
mapping(address=>mapping(address=>uint))public allowance;
//EIP-712中规定的DOMAIN_SEPARATOR
bytes32 public DOMAIN_SEPARATOR;
//keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
//EIP-712中规定的TYPEHASH