Web3就是一个去中心化的互联网，旨在打造出一个全新的合约系统，并颠覆个人和机构达成协议的方式。Web3复刻了第一版互联网（即Web 1.0）的去中心化基础架构，Web 1.0的特色是用户自己架设博客网站以及RSS feed。在此基础上，Web3还结合了Web 2.0丰富的交互体验，比如社交媒体平台。Web 1.0和Web 2.0相结合，就形成了Web3的数字化生态，在其中用户可以真正拥有自己的数据，并且交易受到了加密技术保障
The easiest way to learn the DP principle is by examples.The current recipe contains a few DP examples,but unexperienced reader is advised to refer to other DP tutorials to make the understanding easier.You can find a lot of DP examples and explanations in an excellent tutorial Dynamic Programming:From novice to advanced by Dumitru.The purpose of the recipe is to cover general DP aspects
Dart is strongly typed,unlike JavaScript.If you have used with TypeScript or Flow,this should simplify learning Dart.If you’ve mostly worked with pure JavaScript,it might be more of an adjustment.With strong typing,Dart catches many errors before compiling that might exist in JavaScript code.
contract operators{技术开发：I88合约I928系统8024
//Arithmetic Operators
//+,-,*,/,%,**
//Incremental Operators
//a++,a--,a+=1,a=a+1,++a,--a;
a=10;
a=a++;//here,output will be 10,because the value is first returned and then then increment is done
a=++a;
//Logical Operators
!,&&,||,==,!=
isOwner=true&&false;
var orValue=0x02|0x01;//output would be 0x03
//Bitwise Operators~,>>,<<;
function Operators(){
//Initialize state variables here}}
