duanescarlett

ethers = require('ethers')
require('dotenv').config()

async function main () {
    // Connect to an EVM network
    const provider = new ethers.providers.JsonRpcProvider(`https://polygon-mainnet.g.alchemy.com/v2/${process.env.RPC_KEY}`)
    // Get the gas price
    const gasPrice = provider.getGasPrice()
    // Create a wallet object from private key
    const wallet = new ethers.Wallet(`${process.env.PRIVATE_KEY}`)  

duanescarlett

ethers = require('ethers')
require('dotenv').config()

const main = async () => {
    // Create a wallet
    const wallet = ethers.Wallet.createRandom()

    console.log('Address: ', wallet.address) // Wallet Address
    console.log('Mnemonic: ', wallet.mnemonic.phrase) // Wallet Mnemonic Phrase
    console.log('Private Key: ', wallet.privateKey) // Wallet Private Key

duanescarlett

ethers = require('ethers')
require('dotenv').config()

const main = async () => {
    // Import a wallet
    const wallet = new ethers.Wallet(process.env.PRIVATE_KEY)

    console.log('Address: ', wallet.address) // Wallet Address
    console.log('Private Key: ', wallet.privateKey) // Wallet Private Key

duanescarlett

ethers = require('ethers')
require('dotenv').config()

const main = async () => {
    // Import a wallet
    const wallet = new ethers.Wallet.fromMnemonic(process.env.MNEMONIC)

    console.log('Address: ', wallet.address) // Wallet Address
    console.log('Private Key: ', wallet.privateKey) // Wallet Private Key

duanescarlett

const Web3 = require('web3')
require('dotenv').config()

const main = async () => {
    // Connect to an EVM blockchain
    const web3 = new Web3(Web3.givenProvider || process.env.INFURA_URL)

    // Convert from a decimal number to a wei number
    let amt = web3.utils.toWei('0.1', 'ether')
    console.log(amt)

duanescarlett

const ethers = require('ethers')
const { toChecksumAddress } = require('ethereum-checksum-address')
require('dotenv').config()

const main = async () => {
    // Connect to an EVM network
    const provider = new ethers.providers.JsonRpcProvider(`https://polygon-mainnet.g.alchemy.com/v2/${process.env.RPC_KEY}`)
    // Create a wallet
    const wallet = new ethers.Wallet(process.env.PRIVATE_KEY)
    // Get a signer

duanescarlett

const Web3 = require('web3')
require('dotenv').config()

const main = async () => {
    // Connect to a EVM blockchain
    const web3 = new Web3(Web3.givenProvider || process.env.INFURA_URL)

    // Convert from a decimal number to a wei number
    let amt = web3.utils.toWei('0.1', 'ether')
    console.log('Convert from a decimal number to a wei number', amt)

duanescarlett

const ethers = require('ethers')
const { toChecksumAddress } = require('ethereum-checksum-address')
require('dotenv').config()

const main = async () => {
    // Connect to an EVM network
    const provider = new ethers.providers.JsonRpcProvider(`https://polygon-mainnet.g.alchemy.com/v2/${process.env.RPC_KEY}`)
    // Create a wallet
    const wallet = new ethers.Wallet(process.env.PRIVATE_KEY)
    // Get a signer

duanescarlett

const ethers = require('ethers')
const { toChecksumAddress } = require('ethereum-checksum-address')
require('dotenv').config()

const main = async () => {
    // Connect to an EVM network
    const provider = new ethers.providers.JsonRpcProvider(`https://rpc.ankr.com/bsc`)

    // Create a Factory contract abi 
    const IPair = [

duanescarlett

// SPDX-License-Identifier: GPL-3.0
pragma solidity ^0.8.17;

contract VariablesAndDataTypes {
    // State Variables
    int256 public oneIng = 1;
    uint256 public oneUint = 1;

    // Local Variable
    function getValue() public pure returns(uint256) {