dapp质押LP流动性挖矿系统开发技术
智能合约,{I88公链-I928合约-开发8024},不仅改善了单一的交易过程,还带来了很多突破性机会。它们还有助于创建运行在区块链上的完全去中心化应用程序。这些去中心化应用程序(也被称作dApps),将易于使用的界面(模仿传统web应用程序),以及可编程的智能合约和区块链技术相结合。
智能合约是一种基于区块链技术的自动化合约,具有自动执行、去除信任中介等优势。它是一种可编程的合约,在不需要中间人的情况下能够规定和执行合同条款,从而实现自动化执行。
open in Remix
//SPDX-License-Identifier:GPL-3.0
pragma solidity>=0.4.16<0.9.0;
contract C{
function f(uint a)private pure returns(uint b){return a+1;}
function setData(uint a)internal{data=a;}
uint public data;
open in Remix
//SPDX-License-Identifier:GPL-3.0
pragma solidity>=0.4.16<0.9.0;
contract C{
uint private data;
function f(uint a)private pure returns(uint b){return a+1;}
function setData(uint a)public{data=a;}
function getData()public view returns(uint){return data;}
function compute(uint a,uint b)internal pure returns(uint){return a+b;}
//这将不会编译
contract Register{
mapping(address=>bool)registeredAddresses;
uint price;
address public owner;
modifier onlyOwner{
require(
msg.sender==owner,
"Only owner can call this function."
);
_;
}
constructor(uint initialPrice){
owner=msg.sender;
price=initialPrice;
}
//
function register()public payable costs(price){
registeredAddresses[msg.sender]=true;
}
function changePrice(uint price_)public onlyOwner{
price=price_;
}
}
智能合约是一种基于区块链技术的自动化合约,具有自动执行、去除信任中介等优势。它是一种可编程的合约,在不需要中间人的情况下能够规定和执行合同条款,从而实现自动化执行。
open in Remix
//SPDX-License-Identifier:GPL-3.0
pragma solidity>=0.4.16<0.9.0;
contract C{
function f(uint a)private pure returns(uint b){return a+1;}
function setData(uint a)internal{data=a;}
uint public data;
open in Remix
//SPDX-License-Identifier:GPL-3.0
pragma solidity>=0.4.16<0.9.0;
contract C{
uint private data;
function f(uint a)private pure returns(uint b){return a+1;}
function setData(uint a)public{data=a;}
function getData()public view returns(uint){return data;}
function compute(uint a,uint b)internal pure returns(uint){return a+b;}
//这将不会编译
contract Register{
mapping(address=>bool)registeredAddresses;
uint price;
address public owner;
modifier onlyOwner{
require(
msg.sender==owner,
"Only owner can call this function."
);
_;
}
constructor(uint initialPrice){
owner=msg.sender;
price=initialPrice;
}
//
function register()public payable costs(price){
registeredAddresses[msg.sender]=true;
}
function changePrice(uint price_)public onlyOwner{
price=price_;
}
}