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Grind 169 Leetcode questions

An updated version of Blind 75

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jenniferlynparsons

import React from "react";
import { Route, Redirect } from "react-router-dom";
import { connect } from "react-redux";

const PrivateRoute = ({ component: Component, auth, ...rest }) => (
  <Route
    {...rest}
    render={props =>
      auth.isAuthenticated === true ? (
        <Component {...props} />

cowboy

import axios from 'axios'

let mockingEnabled = false

const mocks = {}

export function addMock(url, data) {
  mocks[url] = data
}

bradwestfall

S3 Static Sites

⚠ This post is fairly old. I don't keep it up to date. Be sure to see comments where some people have posted updates

What this will cover

• Host a static website at S3
• Redirect www.website.com to website.com
• Website can be an SPA (requiring all requests to return index.html)
• Free AWS SSL certs
• Deployment with CDN invalidation

csauve

const R = require("ramda");

//state operations
const updStack = R.curry((prop, updater, state) => R.over(R.lensProp(prop), updater, state));
const updCall = (stackOp) => updStack("callStack", stackOp);
const updData = (stackOp) => updStack("dataStack", stackOp);

//stack operations
const pop = R.curry((num, stack) => {
  if (stack.length < num) throw new Error("Stack underflow!");

jacurtis

/*
This .scss loop will create "margin helpers" and "padding helpers" for use in your web projects.
It will generate several classes such as:

.m-r-10 which gives margin-right 10 pixels.
.m-r-15 gives MARGIN to the RIGHT 15 pixels.
.m-t-15 gives MARGIN to the TOP 15 pixels and so on.

.p-b-5 gives PADDING to the BOTTOM of 5 pixels
.p-l-40 gives PADDING to the LEFT of 40 pixels

dypsilon

/**
 * This short program will encrypt the user password
 * and insert a new record into a mock database.
 */
const Reader = require('fantasy-readers');
const R = require('ramda');
const crypto = require('crypto');

// our mock database
const database = [

paladin3895

process.stdin.resume();
process.stdin.setEncoding('utf8');

var input_stdin = "";
var input_stdin_array = "";
var input_currentline = 0;

process.stdin.on('data', function (data) {
    input_stdin += data;
});

jcallery

/**
 * Display ACF field names for development
 */

function action_function_name( $field ) {
	echo $field['_name'];
}

add_action( 'acf/render_field', 'action_function_name', 10, 1 );

vasanthk

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

1. Clarify and agree on the scope of the system

• User cases (description of sequences of events that, taken together, lead to a system doing something useful)
  • Who is going to use it?
  • How are they going to use it?