AllanJunLi

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.18;
import { SimpleStorage } from "./SimpleStorage.sol";

contract StorageFactory {

    SimpleStorage[] public listOfSimpleStorageContracts;

    function createSimpleStorageContract() public {
        listOfSimpleStorageContracts.push(new SimpleStorage());

AllanJunLi

// SPDX-License-Identifier: MIT
pragma solidity 0.8.18;

contract SimpleStorage {
    // Basic Types: boolean, unit, int, address, bytes
    // bool hasFavoriteNumber = true;
    // uint256 favoriteNumber = 88;
    // string favoriteNumberInText = "eighty-eight";
    // int256 favoriteInt = -88;
    // address myAddress = 0x687Ff6d6a2D149f6475b83BaEC087067b62BE9E8;

AllanJunLi

import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Base64;
import java.util.Collection;
import java.util.List;

public class BlockChain {

AllanJunLi

public class RegexTestStrings {
  public static final String TEST = "This is my small example string which I'm going to use for pattern matching.";
  
  public static void main(String[] args) {
  	System.out.println(TEST.matches("\\w.*"));
    // split by whitespace
    String[] splitStr = TEST.split("\\s+");
    System.out.println(splitStr.length);
    for (String str : splitStr) {
      System.out.println(str);

AllanJunLi

function Circle(radius) {
    this.radius = radius;
    this.area = function() {
        return this.radius * this.radius * Math.PI;
    };
}

var instance = {};
Circle.call(instance, 5);
instance.area();

AllanJunLi

function greeter(saluatation) {
    var counter = 0;                      // If in java counter needs to be defined as final
    var prefix = '. ' + saluatation + ' ';
    return function (name) {              // is bound to counter and prefix, (we call the variables that we are bound to closure)
        counter++;                        // same reference to the outter counter, therefore keeps state
        return counter + prefix + name + '!';
    };
}

var greet = greeter('Hello');