NFT交易平台系统开发(详细案例)丨NFT发行铸造交易平台系统开发(方案逻辑)/源码版
智能合约:它们是存储在区块链上的计算机程序,在满足预定条件时运行,智能合约是用Solidity语言编写的。
去中心化存储技术是一种新型存储技术,它改变了传统的集中式存储技术,将数据从单一位置移到多个位置,这样就消除了存储数据的中心机构或服务器的责任,增加了安全性和数据的有效存储,确保用户的数据安全性。
web3.js是一个JavaScript API库。要让DApp在以太坊上运行,我们可以使用web3.js库提供的web3对象。web3.js通过RPC调用与本地节点通信,它可以与任何公开RPC层的以太坊节点一起使用。web3包含eth对象-web3.eth(用于与以太坊区块链交互)和shh对象-web3.shh(用于与Whisper交互)
///inheritdoc IUniswapV3Factory
function setOwner(address _owner)external override{
require(msg.sender==owner);
emit OwnerChanged(owner,_owner);
owner=_owner;
}
///inheritdoc IUniswapV3Factory
function enableFeeAmount(uint24 fee,int24 tickSpacing)public override{
require(msg.sender==owner);
require(fee<1000000);
//tick spacing is capped at 16384 to prevent the situation where tickSpacing is so large that
//TickBitmap#nextInitializedTickWithinOneWord overflows int24 container from a valid tick
//16384 ticks represents a>5x price change with ticks of 1 bips
require(tickSpacing>0&&tickSpacing<16384);
require(feeAmountTickSpacing[fee]==0);
feeAmountTickSpacing[fee]=tickSpacing;
emit FeeAmountEnabled(fee,tickSpacing);
}
function deploy(
address factory,
address token0,
address token1,
uint24 fee,
int24 tickSpacing
)internal returns(address pool){
parameters=Parameters({factory:factory,token0:token0,token1:token1,fee:fee,tickSpacing:tickSpacing});
pool=address(new UniswapV3Pool{salt:keccak256(abi.encode(token0,token1,fee))}());
delete parameters;