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• FrontEnd Masters - ES6 notes
  • Proper Tail Call (PTC)
  • Function Hoisting
  • Variables
    • Temporal Dead Zone
• Rest Parameters

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Say I have a route for react that looks like below route:

<Route path="/" component={Layout}>
  <IndexRoute component={home}></Route>
  <Route path="user" component={user}></Route>
</Route>

Where the Layout component has just the header and footer only but the main content of the webpage is loaded from the child routes. Home is the index route and /user renders the user route inside the Layout component. To display the content of the home or user component inside the Layout route, you need to include below code in the Layout route:

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var arr = [1,2, 3, [4,5,6, [45,26,25,89]], 7,8,9]

function flatten(myArray) {
    return myArray.reduce(function (x, y) {
        return x.concat(Array.isArray(y) ? flatten(y) : y);
    }, []);
}

console.log(flatten(arr));

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.composite-title, .composite-title, .vs-dark .monaco-workbench>.activitybar>.content {
  background-color: rgba(40, 44, 52, 1) !important;
}

.tabs-container, .tab, .tab.active, .title-actions, .tablist, .tabs-container, .tabs, .composite.title {
  background-color: rgba(40, 44, 52, 1) !important;
}

.tab.active, .tab {
  border-right: 0px !important;

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server {
  root /var/www/example.com/static;
  server_name example.com;
  access_log /var/log/nginx/example.com.access.log;
  error_log /var/log/nginx/example.com.error.log;

  try_files /maintenance.html @proxy;

  location @proxy {
    proxy_pass http://127.0.0.1:10001;

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import React, { Component } from 'react'
import Firebase from 'firebase'
import ReactFireMixin from 'reactfire'
import reactMixin from 'react-mixin'

const ref = new Firebase('https://<APPNAME>.firebaseio.com/users')

class UsersList extends Component {
  constructor (props, context) {
    super(props, context)

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//SPDX-License-Identifier: MIT
pragma solidity >=0.8.0 <0.9.0;

abstract contract Registry {
  function resolver(bytes32 node) external view virtual returns (address);
}

abstract contract Resolver {
  function addr(bytes32 node) external view virtual returns (address);
}

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import { useEffect, useState } from "react";
import { isAddress } from "viem";
import { useNetwork } from "wagmi";

interface Props {
  address?: string;
  chainId?: number;
}

const useMySafes = ({ address = "", chainId }: Props) => {